I am not aware of any issues per say with PCMMC 2.01 however I am just a "Sales Guy".
Everyone elses comments about the PCMMC versions needing to corresponding to the SW of the switch is correct. The New version of PCMMC better know as OfficeServ Manager works better and one program will work on DS616, iDCS 100 and iDCS 500. Unfortunately the file is too large to post on the E-Biz site. Your best bet at getting OfficeServ Manager is to contact Tech support or the training department.
Lastly, I have a PIN breakout for the 400si, DCS, Compact, 50si and all voicemails if you need to configure your own Serial Connector. Also if you need set-up instructions for US Robotics modems shoot me an email and I will send you the initialization instructions.
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