Blank Page when update, create or delete a product

[pufer]

Hi, I have a problem in virtuemart administrator, since a week, when I try create a product and save it, appears a blank page, if delelte caché or sign out from joomla I can access to product section

someone can help me? :-(

joomla 2.5.22
vm VirtueMart 3.0.9
PhP 5.5

I try search in the forum but I can't find anything that solved the problem.

regards.

[jenkinhill]

Check error log.  http://forum.virtuemart.net/index.php?topic=117042.0