[ElfMage]

Originally Posted by slappy

It's not only for pages containing the MainObjTemplate, try to create a arbitrary new page, containing only the text "This is a test" or whatever, and it will happen too (it happens when you save the page, as usual, you can still load the page later).

Also, as soon as I disable the vbWiki extension, the errors are completely gone, so it sounds strange that the errors would be in another extension too, don't you think?

Well, I created some articles earlier today (Test Page, and Test Tool 3 or 4, can't remember), and I didn't get those errors. As soon as I copied the page containing that template, I got the PHP error (blank page), and vbWiki was active in all these tests. Quite puzzling.

Originally Posted by slappy

Are there perhaps some error logs or something that would help you?

Yes, indeed. If your site has a php error log, any php errors will appear there.

It is possible that this issue is caused by vbWiki Std, or it may not. More information would be required.