As explained many times before RadarBox V1.4 has a thread incompatibility problem that has already been corrected. This is because of the totally new technology (multi-threaded independent application) that allows up to 10 thousand flights to be tracked simultaneously - imagine what we are preparing by adding this new technology. :-)
V1.5 will be released in a few days and you will be able to use it for 365 non-stop.