Diasys v2.6 is't compatible with usb-to-can v2

i try to use usb-to-can with diasys v2.60.00.14.
my OS is XP sp3 and i use vci with vci 2.20.855.0 on my system. driver install correctly and i can found usb-to-can V2 on IXXAT interface but when i try to use it on diasys i get this message: Error occurred while reading CAN-DLL ! Inspect CAN unit and start again diasys program. how can i solve it?

I recommend checking with Diasys regarding this. If the Drivers are seeing the device it might be an issue with the software connecting to the drivers. The software might require a particular driver version.