since i can remember we have got problems with communication manager driver software ( which is comming with the FF ITK ) using with PCMCIA FBUS card.
I cant use our PCMCIA FBUS 1 or PCMCIA FBUS Series 2 card with the latest communication manager 4.0.1 because the card is not working after installation of the software.
There is no such limit of CM 4.0.1 to work with PCMCIA-FBUS interface.
We only have problem with some Dell Laptop because of some hardware issue.
Please refer to the related discussion link:
Also there are several diagnose suggestion for you.
1. Check the Device Manager to see whether the driver is installed and identified correctly.
2. Try several PCMCIA-FBUS cards in your Laptop.
3. Try the same PCMCIA-FBUS card in different Laptop with CM 4.0.1.
Hope this will help. If any further request, please feel free to email me through email@example.com.
You could get swift reply and support.