Hallo,
after Update to Virtuemart 2.6 the component JoomSEF 4 for Virtuemart don't work or the site is very slow or don't display items correct.

I've installed the components new,
but the problems are going on.

Thank you for your information. We'll test it and release an updated VM extension that will be compatible with the new VM 2.6.

Hallo,
i only get this message now:

"Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, Tato emailová adresa je chráněna před spamboty, abyste ji viděli, povolte JavaScript and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log."

The one.com support told me, that's your component.

Hi,

Please check your server's errors log, there should be some PHP error message reported.
You can also try deleting JoomSEF's VM extension manually by deleting following two files (of course make a backup first!):
/components/com_sef/sef_ext/com_virtuemart.php
/components/com_sef/sef_ext/com_virtuemart.xml