G'Day Ron,
These messages are from your Windows system - not LOGic. Before LOGic opens the Misc Ham Setup, for your convenience, LOGic tries to list all the serial devices on your system. LOGic can then give you a list of serial devices from which you can choose the one connected to your radio.
Unfortunately, Windows (you don't say which one you are using) has some problems "enumerating" the mixture of serial devices on your system - resulting in the MSCORLIB message you are seeing, LOGic is simply relaying the Windows system error.
I write from bitter experience chasing this problem on my Windows 7 system and LOGic 9 for many weeks, with the problem returning time and time again. Search the forum for MSCORLIB.
To verify you have the problem I think you have, try using Tools, Advanced, Serial Port Status. You should see the same errors. A reply to the forum with more technical detail would be helpful - including the full text of the error - there are dozens of potential errors from the Windows MSCORLIB module.
To fix the problem you will need to clean out your USB and/or serial devices from the Windows Registry. Search the forum for "hidden devices" and/or "mscorlib" and you should find material on how to go about doing that.
Peter VK4IU
You can help by posting images of
any errors and including your
Logic version.