Hi,
if you have problems using third party software in combination with version V3.x of the different "pcan_xxx.sys" device drivers than it is highly recommended to use the latest dll.
For example: If you are using the free "ProCANopen Viewer" from Vector with the PCAN-USB adaptor than is necessary to use the pcan_usb.dll version 1.52 or higher (see the note "New Device Driver V3.x - important information" at the support page http://www.peak-system.com/Support.55.0.html?&L=1). Otherwise the software can´t work with the PCAN-USB adaptor.