mod_virtuemart_product vm2.0 problem "Catchable fatal error"

[kamoll]

mod_virtuemart_product vm2.0 problem "Catchable fatal error" 
Catchable fatal error: Object of class stdClass could not be converted to string in /home/thainotepc/domains/thainotepc.com/public_html/libraries/joomla/cache/storage/file.php on line 88
Hi, I am new to Virtuemart 2.0 and just installed it on my Joomla 1.5.22 and have problem.
CAN I FIX IT ?

[jacosky]

I'm facing the same issue and I just made a new install. i have searched round the forum on this and the results I got didn't seem to help out in any way.

Please can someone be kind to help out here?