3 Stations were using VarAC V8.2.0 with VARA-FM V4.2.9 and WIN10 Excellent SNRs to all.
One colleque HB9HAE deleted erroneously in the BC Window the TO: "ALL" so the field was empty. (By the way he got confused about the "ALL" Button above the empty field.
--> His message to the 2 other Stations (me HB9ASV and HB0SM) arrived cryptic. From and To was completely randomly filled with strange chars. Even the text message was corrupt ant truncated. Important: we both got exactly the same message!
The strange behaviour was reproducible AND in some cases the VarAC program of HB0SM get stuck without any visible symptoms. So it was for chats no more usable and need to be restarted.
Thanks Irad for checking and repair if possible! 73, Peter HB9ASV