Hello
I've found that after upgrade to VM 3.0.9 from VM 2.6.6 my language files are the same with my corrections. How to check the version of installed language pack? Is there conception of language pack version in VM and how can I check it?
We don't add version numbers to the translations, because they are generated daily from the current translations on transifex. So every time a translator adds a line, the generated language pack, at http://virtuemart.net/community/translations changes a few hours later.
You can for example use an editor like the free 'Notepad++' to compare your current version of a language file with a newly downloaded one. In 'Notepad++' you just have to open both versions and then select it's 'Compare' feature.