I installed the user defined forms on 3.03 and can add a new page (User Defined Form), but do not see the form tabs that allow me to add form fields.

Update - after doing a flush-all, I see the tabs now, now I cannot add a field. I get "There has been an error".

Check your browser XHR section (or your php error log) for the actual error message and backtrace.

If you're using Chrome then this is found under 'Web Inspector' => 'Network' => 'XHR' then try add again.

Thanks for the response, I get the attached reply.

1) Turn on dev mode
2) Try again

I see the attached error.

Great so now open up that line (that only shows that a request failed, not why) and look at the Response tab to see the back trace.

ERROR [User Error]: Couldn't run query:
INSERT INTO "EditableFormField_versions" ("Required", "CustomRules", "CustomSettings", "Default", "CustomErrorMessage", "LastEdited", "ClassName", "Created", "Name", "Title", "Sort", "CanDelete", "CustomParameter", "ParentID", "Version", "RecordID", "AuthorID") VALUES ('1', 'a:0:{}', 'a:6:{s:10:\"ExtraClass\";s:0:\"\";s:10:\"RightTitle\";s:0:\"\";s:9:\"MinLength\";s:0:\"\";s:9:\"MaxLength\";s:0:\"\";s:4:\"Rows\";s:1:\"1\";s:10:\"ShowOnLoad\";s:4:\"Show\";}', null, null, '2013-02-16 15:12:26', 'EditableTextField', '2008-11-03 10:10:51', 'EditableTextField1', '*First Name:', '0', '1', null, '81', 1, 1, 2)

Unknown column 'CanDelete' in 'field list'
IN POST /admin/pages/edit/EditForm
Line 580 in /home/acthoust/public_html/framework/model/MySQLDatabase.php

Source
======
571: }
572:
573: public function databaseError($msg, $errorLevel = E_USER_ERROR) {
574: // try to extract and format query
575: if(preg_match('/Couldn\'t run query: ([^\|]*)\|\s*(.*)/', $msg, $matches)) {
576: $formatter = new SQLFormatter();
577: $msg = "Couldn't run query: \n" . $formatter->formatPlain($matches[1]) . "\n\n" . $matches[2];
578: }
579:
* 580: user_error($msg, $errorLevel);
581: }
582:
583: /**
584: * Return a boolean type-formatted string
585: *
586: * @param array $values Contains a tokenised list of info about this data type

Trace
=====
user_error(Couldn't run query:
INSERT INTO "EditableFormField_versions" ("Required", "CustomRules", "CustomSettings", "Default", "CustomErrorMessage", "LastEdited", "ClassName", "Created", "Name", "Title", "Sort", "CanDelete", "CustomParameter", "ParentID", "Version", "RecordID", "AuthorID") VALUES ('1', 'a:0:{}', 'a:6:{s:10:\"ExtraClass\";s:0:\"\";s:10:\"RightTitle\";s:0:\"\";s:9:\"MinLength\";s:0:\"\";s:9:\"MaxLength\";s:0:\"\";s:4:\"Rows\";s:1:\"1\";s:10:\"ShowOnLoad\";s:4:\"Show\";}', null, null, '2013-02-16 15:12:26', 'EditableTextField', '2008-11-03 10:10:51', 'EditableTextField1', '*First Name:', '0', '1', null, '81', 1, 1, 2)

Unknown column 'CanDelete' in 'field list',256)
MySQLDatabase.php:580

MySQLDatabase->databaseError(Couldn't run query: INSERT INTO "EditableFormField_versions" ("Required", "CustomRules", "CustomSettings", "Default", "CustomErrorMessage", "LastEdited", "ClassName", "Created", "Name", "Title", "Sort", "CanDelete", "CustomParameter", "ParentID", "Version", "RecordID", "AuthorID") VALUES ('1', 'a:0:{}', 'a:6:{s:10:\"ExtraClass\";s:0:\"\";s:10:\"RightTitle\";s:0:\"\";s:9:\"MinLength\";s:0:\"\";s:9:\"MaxLength\";s:0:\"\";s:4:\"Rows\";s:1:\"1\";s:10:\"ShowOnLoad\";s:4:\"Show\";}', null, null, '2013-02-16 15:12:26', 'EditableTextField', '2008-11-03 10:10:51', 'EditableTextField1', '*First Name:', '0', '1', null, '81', 1, 1, 2) | Unknown column 'CanDelete' in 'field list',256)
MySQLDatabase.php:132

MySQLDatabase->query(INSERT INTO "EditableFormField_versions" ("Required", "CustomRules", "CustomSettings", "Default", "CustomErrorMessage", "LastEdited", "ClassName", "Created", "Name", "Title", "Sort", "CanDelete", "CustomParameter", "ParentID", "Version", "RecordID", "AuthorID") VALUES ('1', 'a:0:{}', 'a:6:{s:10:\"ExtraClass\";s:0:\"\";s:10:\"RightTitle\";s:0:\"\";s:9:\"MinLength\";s:0:\"\";s:9:\"MaxLength\";s:0:\"\";s:4:\"Rows\";s:1:\"1\";s:10:\"ShowOnLoad\";s:4:\"Show\";}', null, null, '2013-02-16 15:12:26', 'EditableTextField', '2008-11-03 10:10:51', 'EditableTextField1', '*First Name:', '0', '1', null, '81', 1, 1, 2))
Database.php:655

SS_Database->manipulate(Array)
DB.php:175

DB::manipulate(Array)
DataObject.php:1174

DataObject->write()
EditableFormField.php:380

EditableFormField->populateFromPostData(Array)
FieldEditor.php:157

FieldEditor->saveInto(UserDefinedForm)
Form.php:1229

Form->saveInto(UserDefinedForm)
CMSMain.php:825

CMSMain->save(Array,Form,SS_HTTPRequest)
Form.php:360

Form->httpSubmission(SS_HTTPRequest)
RequestHandler.php:184

RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
RequestHandler.php:204

RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
Controller.php:153

Controller->handleRequest(SS_HTTPRequest,DataModel)
LeftAndMain.php:357

LeftAndMain->handleRequest(SS_HTTPRequest,DataModel)
AdminRootController.php:89

AdminRootController->handleRequest(SS_HTTPRequest,DataModel)
Director.php:307

Director::handleRequest(SS_HTTPRequest,Session,DataModel)
Director.php:119

Director::direct(/admin/pages/edit/EditForm,DataModel)
main.php:126

Ok, so looks like you upgraded userforms recently? You'll need to jump into your database and run a quick query.

http://www.silverstripe.org/all-other-modules/show/10228?start=8#post276161