I have been using JRiver for several years on my Windows laptop without any problems (MC19). I have bought an iMac M3 and upgraded to MC 32 on it. When a CD is inserted into my Samsung external CD/DVD drive, Media Centre crashes and will not open again until the CD is ejected. Then Media Centre opens again as normal. I have changed the settings on the iMac for MC 32 to be opened when a CD is inserted. The library folder is on an external SSD drive and all looks good in Media Centre. The error report is long but this is shown:
Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6
Terminating Process: Media Center 32 [6434]