Varac start major issue COM 2 not available

I have a major issue at the program start. A pop up indicating COM2 is not available appears even if this com is not used (previously I used it for PTT). Vara modem is closed a couple of time before having both Varac and vara available. I attach the log after the program start. I tried to reinstall Vara modem (latest version) but without improvement. I'm on Win7.

73 de Phil, iz1fks