BE-Layout and fluidpages conflict in 6.1.7 about fluidpages HOT 2 CLOSED

I downgraded the TYPO3 Version back to 6.1.7
The Problem remains.

Well when I just update the versions following error occurs and i cannot get back to the backend.
Fatal error: Call to undefined method FluidTYPO3\Flux\Core::addGlobalTypoScript() in /myserver/public_html/webshare/customer/typo3conf/ext/fluidpages/ext_tables.php on line 8 Call Stack: 0.0002 670288 1. {main}() /myserver/public_html/webshare/customer/typo3/mod.php:0 0.0003 685432 2. require('/myserver/public_html/webshare/customer/typo3/init.php') /myserver/public_html/webshare/customer/typo3/mod.php:33 0.2333 10473960 3. TYPO3\CMS\Core\Core\Bootstrap->loadExtensionTables() /myserver/public_html/webshare/customer/typo3/init.php:69 0.2410 12462720 4. TYPO3\CMS\Core\Utility\ExtensionManagementUtility::loadExtTables() /myserver/public_html/webshare/customer/typo3/sysext/core/Classes/Core/Bootstrap.php:869 0.2411 12462904 5. TYPO3\CMS\Core\Utility\ExtensionManagementUtility::loadSingleExtTablesFiles() /myserver/public_html/webshare/customer/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php:1713 0.3329 19784304 6. require('/myserver/public_html/webshare/customer/typo3conf/ext/fluidpages/ext_tables.php') /myserver/public_html/webshare/customer/typo3/sysext/core/Classes/Utility/ExtensionManagementUtility.php:1739

I can comment out following line: ext:fluidpages/ext_tables.php (line 8)
\FluidTYPO3\Flux\Core::addGlobalTypoScript('EXT:fluidpages/Configuration/TypoScript');

I can login again, but TYPO3 says (in BE):
it can't be loaded

Error in the FE:

#1301648167: The requested page didn't have a proper connection to the tree-root!

() (More information)
TYPO3\CMS\Core\Error\Http\ServiceUnavailableException thrown in file
/myserver/public_html/webshare/customer/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php in line 1476.

from fluidpages.

Hi Manuel,

You are clearly using some code which calls a new class name, but still use an old Flux version. You will have to downgrade fluidpages (sorry, I know the new version has some nice added features but hopefully it won't be too long before we can release it to TER). I expect that right now, you use fluidpages from git but Flux from TER, which will not work since we switched to namespaces in our repositories.

If you are using the git versions and have recently forked/pulled, please read this notification:

https://fedext.net/blog/git-branching-strategy.html

...which should explain how to get a matching stability.

I will take the liberty of closing this issue since this particular, very unfriendly error clearly stems from a bad mix of extension versions. You should either use git versions checked out on matching branches - or the TER version (which does not contain the class in question).

Cheers,
Claus

from fluidpages.