Problem with chceckout

[svetreklam@.....com]

Hello,

Just bought one page checkout for my website http://www.bestprotein.sk

I followed install guide, but serious problem appear.

When you click add to cart, or show cart, it shows this window (attachemnt)

I am using joomla 2.5, virtuemart 2.0.6

Can you help me ? Thank you very much

[admin]

Hello,
If the CSS refresh with F5 did not help, please enable error reporting and let us know if you get any Fatal error at the bottom of the generated source code. According to our email communication it seems that this is a 3rd party compatiblity issue. Please make sure that when entering OPC backend, you get no errors. If you are running Virtuemart 2.0.3x, please update to a stable version of Virtuemart. Did the installer give you any errors? If it did, please unstill OPC, make sure all directories are writable according to the Installation guide:

/components (to create com_onepage)
/administrator/components (to create com_onepage)
/libraries/joomla/document (to create own document handler with component installer)
/plugins/system (to create OPC plugin with component instaler)
after installation the only write permissions can remain on the configuration file:
/components/com_onepage/config/onepage.cfg.php
(optionally com_virtuemart folders to fix known fatal errors)

and reinstall again.

Best Regards,
Stan

[admin]

The fix for this problem will be included in 2.0.67. The problem was a silent fatal error when the thumb directory was not writable by OPC.
Stan