Please, make check.lic and flex.log files and send us:
1. Download ChekLic1119CSoftAS.
Unzip it, then run the program on Client's PC. Clear log. Choose Feature and Version then press the Test button, save the log, and send it.
2. Then find flex.log file from c:\Program Files (x86)\CSoft AS\CSoft License Server\ on Server machine and send it also.