We need to know the information about your operating systems. The model of the device. The version of our product. Also we need to know whether you updated our software. If yes then how did you do that?
Also please check if your device works locally and try to use any other device with our USB for RDP.
Client: IGEL Thin Client Windows XP Embedded Standard, SP3 Pre-Installed USB for Remote Desktop 2.4
Server: Virtualized Hardware via VMWare Windows Server 2008 Standard (64 Bit) Trial Version of USB for Remote Desktop 2.5 ("fresh" installed)
As I can see you installed different versions of USB for RDP: on the server you have version 2.5 but on the client you have version 2.4. Please install identical versions of the product on both PCs.
Should it work in Terminal Server Session, that each Session has its own USB-devices?
As soon as you enter terminal session with your device redirected, all other users (even though they have their own accounts) can see this device. Our software emulates as if a device is really plugged into terminal server.