Found it in CalendarEvents.ss

Hi, I have to come back to my first Problem with extending the calendar Module. I updated to r70 now, but I still got the same Error.

[User Error] Couldn't run query: SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE (CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) ORDER BY StartDate ASC Column 'CalendarID' in where clause is ambiguous
GET /kalender/

Line 401 in /usr/www/users/kirchk/sapphire/core/model/MySQLDatabase.php
Source

392 	}
393 	
394 	function databaseError($msg, $errorLevel = E_USER_ERROR) {
395 		// try to extract and format query
396 		if(preg_match('/Couldn\'t run query: ([^\|]*)\|\s*(.*)/', $msg, $matches)) {
397 			$formatter = new SQLFormatter();
398 			$msg = "Couldn't run query: \n" . $formatter->formatPlain($matches[1]) . "\n\n" . $matches[2];
399 		}
400 		
401 		user_error($msg, $errorLevel);
402 	}
403 }
404 
405 /**
406  * A result-set from a MySQL database.
407  * @package sapphire

Trace

    * Couldn't run query: SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE (CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) ORDER BY StartDate ASC Column 'CalendarID' in where clause is ambiguous
      Line 401 of MySQLDatabase.php
    * MySQLDatabase->databaseError(Couldn't run query: SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE (CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) ORDER BY StartDate ASC | Column 'CalendarID' in where clause is ambiguous,256)
      Line 102 of MySQLDatabase.php
    * MySQLDatabase->query(SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE (CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) ORDER BY StartDate ASC,256)
      Line 120 of DB.php
    * DB::query(SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE (CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) ORDER BY StartDate ASC)
      Line 426 of SQLQuery.php
    * SQLQuery->execute()
      Line 2407 of DataObject.php
    * DataObject->instance_get(CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ,StartDate ASC,,,DataObjectSet)
      Line 2383 of DataObject.php
    * DataObject::get(ChurchCalendarDateTime,CalendarID=43 AND StartDate BETWEEN '2009-08-24' AND '2010-02-24' ,StartDate ASC)
      Line 346 of Calendar.php
    * Calendar->Events(,sfDate,sfDate,1,,)
      Line 752 of Calendar.php
    * Calendar_Controller->Events()
    * call_user_func_array(Array,Array)
      Line 550 of ViewableData.php
    * ViewableData->cachedCall(Events,,)
      Line 591 of ViewableData.php
    * ViewableData->hasValue(Events)
      Line 82 of .cache.usr.www.users.kirchk.event_calendar.templates.Layout.Calendar.ss
    * include(/usr/www/users/kirchk/silverstripe-cache/.cache.usr.www.users.kirchk.event_calendar.templates.Layout.Calendar.ss)
      Line 354 of SSViewer.php
    * SSViewer->process(ChurchCalendar_Controller)
      Line 346 of SSViewer.php
    * SSViewer->process(ChurchCalendar_Controller)
      Line 175 of Controller.php
    * Controller->handleAction(HTTPRequest)
      Line 129 of RequestHandler.php
    * RequestHandler->handleRequest(HTTPRequest)
      Line 122 of Controller.php
    * Controller->handleRequest(HTTPRequest)
      Line 29 of ModelAsController.php
    * ModelAsController->handleRequest(HTTPRequest)
      Line 277 of Director.php
    * Director::handleRequest(HTTPRequest,Session)
      Line 121 of Director.php
    * Director::direct(/kalender/)
      Line 118 of main.php

I didn't changed my code of the files I already postet. Is my code realy correct?

Looks like there was one more fix needed. Update your SVN and try again?

hm, the ChurchCalender Page, I added before does show a working Kalender now in the frontend, but in the backend when selecting or adding a ChurchCalendarPage there pops up a error window. This is the part I was able to copy from it.

ERROR [User Error]: Couldn't run query: 
SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName
FROM `CalendarDateTime`
LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID
WHERE ((is_announcement = 1 AND CalendarID = 47) AND (`CalendarID` = '47')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime'))
LIMIT 0,10 

Column 'CalendarID' in where clause is ambiguous
IN POST /admin/getitem?ID=47&locale=de_DE&ajax=1
Line 401 in /usr/www/users/kirchk/sapphire/core/model/MySQLDatabase.php

Source
======
  392: 	}
  393: 	
  394: 	function databaseError($msg, $errorLevel = E_USER_ERROR) {
  395: 		// try to extract and format query
  396: 		if(preg_match('/Couldn\'t run query: ([^\|]*)\|\s*(.*)/', $msg, $matches)) {
  397: 			$formatter = new SQLFormatter();
  398: 			$msg = "Couldn't run query: \n" . $formatter->formatPlain($matches[1]) . "\n\n" . $matches[2];
  399: 		}
  400: 		
* 401: 		user_error($msg, $errorLevel);
  402: 	}
  403: }
  404: 
  405: /**
  406:  * A result-set from a MySQL database.
  407:  * @package sapphire

<ul>user_error(Couldn't run query: 
SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName
FROM `CalendarDateTime`
LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID
WHERE ((is_announcement = 1 AND CalendarID = 47) AND (`CalendarID` = '47')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime'))
LIMIT 0,10 

Column 'CalendarID' in where clause is ambiguous,256)
line 401 of MySQLDatabase.php

MySQLDatabase->databaseError(Couldn't run query: SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE ((is_announcement = 1 AND CalendarID = 47) AND (`CalendarID` = '47')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) LIMIT 0,10 | Column 'CalendarID' in where clause is ambiguous,256)
line 102 of MySQLDatabase.php

MySQLDatabase->query(SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE ((is_announcement = 1 AND CalendarID = 47) AND (`CalendarID` = '47')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) LIMIT 0,10,256)

OK, I'm now on Rev 72 with the following Error.
Fatal error: Object::add_extension() - Can't find extension class for "CalendarScriptInit" in /usr/www/users/kirchk/sapphire/core/Object.php on line 386

That's odd. Is the file CalendarScriptInit.php in your code folder?

Ok, I was to fast, so it was my fault.

The frontend is looking good, but the backend still gets the error Popup.

ERROR [User Error]: Couldn't run query: 
SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName
FROM `CalendarDateTime`
LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID
WHERE ((is_announcement = 1 AND CalendarDateTime.CalendarID = 43) AND (`CalendarID` = '43')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime'))
LIMIT 0,10 

Column 'CalendarID' in where clause is ambiguous
IN POST /admin/getitem?ID=43&ajax=1
Line 401 in /usr/www/users/kirchk/sapphire/core/model/MySQLDatabase.php

Source
======
  392: 	}
  393: 	
  394: 	function databaseError($msg, $errorLevel = E_USER_ERROR) {
  395: 		// try to extract and format query
  396: 		if(preg_match('/Couldn\'t run query: ([^\|]*)\|\s*(.*)/', $msg, $matches)) {
  397: 			$formatter = new SQLFormatter();
  398: 			$msg = "Couldn't run query: \n" . $formatter->formatPlain($matches[1]) . "\n\n" . $matches[2];
  399: 		}
  400: 		
* 401: 		user_error($msg, $errorLevel);
  402: 	}
  403: }
  404: 
  405: /**
  406:  * A result-set from a MySQL database.
  407:  * @package sapphire

<ul>user_error(Couldn't run query: 
SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName
FROM `CalendarDateTime`
LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID
WHERE ((is_announcement = 1 AND CalendarDateTime.CalendarID = 43) AND (`CalendarID` = '43')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime'))
LIMIT 0,10 

Column 'CalendarID' in where clause is ambiguous,256)
line 401 of MySQLDatabase.php

MySQLDatabase->databaseError(Couldn't run query: SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE ((is_announcement = 1 AND CalendarDateTime.CalendarID = 43) AND (`CalendarID` = '43')) AND (`CalendarDateTime`.ClassName IN ('ChurchCalendarDateTime')) LIMIT 0,10 | Column 'CalendarID' in where clause is ambiguous,256)
line 102 of MySQLDatabase.php

MySQLDatabase->query(SELECT `CalendarDateTime`.*, `ChurchCalendarDateTime`.*, `CalendarDateTime`.ID, if(`CalendarDateTime`.ClassName,`CalendarDateTime`.ClassName,'CalendarDateTime') AS RecordClassName FROM `CalendarDateTime` LEFT JOIN `ChurchCalendarDateTime` ON `ChurchCalendarDateTime`.ID = `CalendarDateTime`.ID WHERE ((is_announcement = 1 AND CalendarDateTime.CalendarID = 43) AND (`CalendarID` = '43')) AND 

I forgot to mention, I'm on Rev 74 now.