Updated to VM 2.0.4 Beta ,
Orders >> order list> if I change the status of an order and then click the check box (I have notify, comment and update ticked) - then update order - I get an email to both vendor and buyer - and it works for me
But I get the pink /red notice in the error bar above -- This appears to have no effect on the program and it still works -
* I clicked on any Id number in the right column and I could update and change orders there too - no error came up.
It's an old error since version 2.0.2 unfortunately still unfixed :-(
I suggested a fix more than a month ago, please have a look here:
http://forum.virtuemart.net/index.php?topic=99383.0 (http://forum.virtuemart.net/index.php?topic=99383.0)