TYPO3 Core

I can confirm this problem.

It appears that issue happens only and only for non-admin user

I have the same problem with 4.2.

Non-Admin users cannot preview pages versions in the Live Workspace.

Did anybody find a fix about that?

The same problem also have the Typo3 4.1.2!

Same problem with 4.2.3.

Page id = 1606, but preview id is 1607.

I made a patch for this issue. It is for version 4.2.9.
The problem was that $this->getRecord('pages',$id,'pid,t3ver_oid') in t3lib_userAuthGroup::isInWebMount() function returns null, becaus the $TCA is not set at this time.

Along the same line: This is both for admins and non-admins btw.

1) Make a new version of a page (or a page and it's content - doesn't matter) - in live workspace.

2) switch to version preview (by right clicking on the page and in the click-menu choose "versioning" - NOT by using the Versioning-module!))

3) now you have Version overview and se the 2 versions of the page nicely aligned.

4) Click the preview icon of the unswaped page = you get the broken rootline error as mentioned in teh bugreport.

Btw, it's completely confusing, that there's a module "Versioning" and a clickmenu item called "Versioning" - but the y lead to completely different interfaces and functions of TYPO3.