Hi forum

I created a new Page-Type and added the following fields to the DB

static $has_one = array(
	'MyFile' => 'File',
	'Preview' => 'Image'
);

I added the appropriate Form Fields to the Tabs in getCMSFields.
Whenever i try to save such a Page, i get a Error: Error saving content.

It works fine when i remove the 'File' field.
The 'Image' upload always works, what could be the Problem with 'File'?

Edit
Rephrased Topic Title for clarity.

I changed the FileField to FileIFrameField, now the upload works, but whenever i try to save the page i get:
Error in Ajax evaluator on line 974: invalid flag after regular expression

The document is actually being saved, but the error message is really annoying.
Could somebody please help me resolve this? Or maybe tell me where this error comes from? Is there some sort of Error-Log with a more detailed description, since i really don't have a clue where to start debugging.

Thanks a ton

Anybody?
Is there a workaround for this?