Creation button doesn't work

[MMysiv]

Hi! I have problem with creation & save buttons. I fill all fields in category, products and another, and when I klick on create or save button just nothing happened. It doesn't metter which browser I use, this trouble present everywhere. Help me please. My version: 2.0.20a.
PS: Sorry for my english. Hello from Ukraine! 

[jenkinhill]

I assume this is with Joomla 2.5.9?

Are you logged in as Vendor?

[MMysiv]

I have joomla 2.5.4. I can't put tick on multivendor field, save button doesn't work. I check virtuemart_vmusers table in mysql, fields "virtuemart_vendor_id" and "user_is_vendor" have value as "1"

[MMysiv]

It's so funny) Everything is OK, all that virtuemart need is to update virtuemart.cfg.