Products Module stopped working

[Barrowboy]

Hi can anyone help? My Products module appears to have stopped working. In the admin on Products Module non of the tabs are selectable, but the products on the frontend are still working ok.
I am using CMS version 1.9.2 the Products Module is version 2.15.1
I have noticed that the CGExtentions module Version 1.38.1 is showing a red message 'Minimum CMSMS Version Required: 1.11.7'
'Has Dependents (Products)' could this be the reason and does this mean I need upgrade CMSMS?
Or is there away to roll back the CGExtention to a previous version.
Also I notice there is a new Products Module V 2.20 would installing this resolve the problem.

Any advice would be appreciated.
Thanks

[Dr.CSS]

That version of CMSMS is way out of date, you need to upgrade it then upgrade your modules, NOTE: newer CG modules need PHP 5.3...

[staartmees]

ALWAYS keep your cmsms and modules up-to-date.