There's no mention of Joomla 1.5 compatibility that I can find on this site or on JED directory. Is 2.0.20 still working with 1.5? will it stop being 1.5 compatible eventually?
found it at the top of the downloads page.
But - some people have had problems with Joomla 1.5, solved by updating to Joomla 2.5.
It has long been stated that Joomla 1.5 is no longer supported. http://virtuemart.net/news/list-all-news/426-end-of-life-for-virtuemart-11-heidelpay-now-in-virtuemart-2012
"We decided to declare now the end of life for VirtueMart 1.1, and that the version 2 of VirtueMart is not any longer maintaining joomla 1.5 compatibility." 4 October 2012
I'm aware of that, but still need to know if a particular version of Virtuemart 2 is specifically not compatible with 1.5
I have been using 1.5 and VM 2 for a while with no problems that I have noticed, except for the errors which show up for admin users on front end.