I'm having the same "bad class to singleton()" problem as JonathanParker, getting the same traceback, but slightly different debug info. The error is below.

I am also new to SilverStripe. I downloaded the both the CMS and the Blog today so I have the latest "released" versions. One difference is that I am not installing over the tutorial, just the startup blackcandy theme. I am using a my windows machine as the server, using "localhost". The machine is running older versions of apache (2.0.55), mysql (5.0.18 win32), and Php (5.1.2.2).

I wonder if we have anything in common?

----------------------------

FATAL ERROR: Bad class to singleton() - BlogEntry
At line 85 in C:\Apache2\htdocs\silverstripe\sapphire\core\Core.php

user_error(Bad class to singleton() - BlogEntry,256)
line 85 of Core.php

singleton(BlogEntry)
line 175 of DatabaseAdmin.php

DatabaseAdmin->doBuild()
line 90 of DatabaseAdmin.php

DatabaseAdmin->build(Array)
line 261 of Controller.php

Controller->run(Array)
line 104 of Director.php

Director::direct(/db/build)
line 158 of main.php
Context
Debug (Debug::showError() in line 180 of Debug.php)

Notice: Trying to get property of non-object in C:\Apache2\htdocs\silverstripe\ecommerce-v0.5.2\code\Order.php on line 1077

* className =

BlogEntry

* _SINGLETONS =
o Member =
Database record: Member
+ ID :

0

o Newsletter =
Database record: Newsletter
+ ID :

0

o Newsletter_SentRecipient =
Database record: Newsletter_SentRecipient
+ ID :

0

o Newsletter_Recipient =
Database record: Newsletter_Recipient
+ ID :

0

o NewsletterType =
Database record: NewsletterType
+ ID :

0

o PageComment =
Database record: PageComment
+ ID :

0

o Order =
Database record: Order
+ ID :

0

o DataObject =
Database record: DataObject
+ ID :

0

o Order_Item =
Order Item Order_Item

Product:
Quantity:
UnitPrice:
Title:
OrderID:
ProductID:
ProductVersion:
o OrderStatusLog =
Database record: OrderStatusLog
+ ID :

0

o Payment =
Database record: Payment
+ ID :

0

+ IdentityURL :

+ ForumRank :

Community Member

+ Currency :

USD

+ IP :

127.0.0.1

+ MemberID :

1

o Product_Attribute =
Database record: Product_Attribute
+ ID :

0

o Post =
Database record: Post
+ ID :

0

o Post_Subscription =
Database record: Post_Subscription
+ ID :

0

o MemberLocation =
Database record: MemberLocation
+ ID :

0

o Email_BounceRecord =
Database record: Email_BounceRecord
+ ID :

0

o Email_BlackList =
Database record: Email_BlackList
+ ID :

0

o PageView =
Database record: PageView
+ ID :

0

o SiteTree =
Database record: SiteTree
+ ID :

0

o Translatable = Translatable::__set_state(array( 'translatableFields' => array ( 0 => NULL, 1 => true, 2 => NULL, 3 => NULL, 4 => NULL, 5 => NULL, 6 => NULL, 7 => NULL, 8 => NULL, ), 'original_values' => NULL, 'owner' => NULL, 'extension_instances' => array ( ), 'class' => 'Translatable', ))
o QueuedEmail =
Database record: QueuedEmail
+ ID :

0

o File =
Database record: File
+ ID :

0

o EditableCheckboxOption =
Database record: EditableCheckboxOption
+ ID :

0

o EditableDropdownOption =
Database record: EditableDropdownOption
+ ID :

0

o EditableFormField =
Database record: EditableFormField
+ ID :

0

o EditableRadioOption =
Database record: EditableRadioOption
+ ID :

0

o SubmittedForm =
Database record: SubmittedForm
+ ID :

0

o SubmittedFormField =
Database record: SubmittedFormField
+ ID :

0

o Group =
Database record: Group
+ ID :

0

o Member_UnsubscribeRecord =
Database record: Member_UnsubscribeRecord
+ ID :

0

o Permission =
Database record: Permission
+ ID :

0

o Widget =
Database record: Widget
+ ID :

0

o WidgetArea =
Database record: WidgetArea
+ ID :

0

o ChequePayment =
Database record: ChequePayment
+ ID :

0

+ IdentityURL :

+ ForumRank :

Community Member

+ Currency :

USD

+ IP :

127.0.0.1

+ MemberID :

1

o DPSPayment =
Database record: DPSPayment
+ ID :

0

+ IdentityURL :

+ ForumRank :

Community Member

+ Currency :

USD

+ IP :

127.0.0.1

+ MemberID :

1

o PayPalPayment =
Database record: PayPalPayment
+ ID :

0

+ IdentityURL :

+ ForumRank :

Community Member

+ Currency :

USD

+ IP :

127.0.0.1

+ MemberID :

1

o WorldpayPayment =
Database record: WorldpayPayment
+ ID :

0

+ IdentityURL :

+ ForumRank :

Community Member

+ Currency :

USD

+ IP :

127.0.0.1

+ MemberID :

1

o Order_Item_Attribute =
Database record: Order_Item_Attribute
+ ID :

0

o Page =
Database record: Page
+ ID :

0

o GhostPage =
Database record: GhostPage
+ ID :

0

Hi Dennis, It has been some time since I've had this problem and I should have really posted the solution at the time I found it so this is from memory:
The root of my problem was that I did not have PHP 'short tags' enabled within my WAMP 2.0 install and some of the php files within SS were using short tags i.e. <? code ?> as apposed to <?php code ?>.
What I suggest is that you check the offending source code files to see if any start with the short tag (<?) and replace it with (<?php )
You could also check to see if php short tags is enabled in your local install. If not then enable it and see if that cures the problem. If it does then you will need to check the source files as I have said above.
I opted for changing offending source files as I could not enable short tags on my live production server.

Hope this helps Dennis if you need any further assistance then please e-mail me jonathan@dabnis.com

Regards.

Jonathan

This error was caused by something different On line 118 in BBCodeParser.php, there appears the following line:

If I comment out this line, the error goes away and the module appears to work. I don't know if this is just a stray debug message left in the code, or if commenting out this line is going to cause other problems down the line....(keeping fingers crossed!)

Also used the fix from civilis.biz above (thanks!) for the XML error. Depending on where you installed, BBCodeParser.php is located somewhere like this :

..\silverstripe-v2.2.2\sapphire\parsers\

change the line :

      Debug::message($this->content);
to

      /*Debug::message($this->content);*/