Cdenk and I had a phone support regarding this issue and the problem was eventually resolved using a rarely used method. I am posting this message for the benefit of others who may face the same issue:
As per our phone conservation, for unknown reason your TLServer was not contactable via 127.0.0.1:9080 even though both TLServer and TRiLOGI were running on the same computer.
The solution eventually was to change the TLServer listerning port. This was accomplished by clicking on the "Configure Users" button on the TLServer and login as Administrator (default is no password), then change the TLServer port to another number. We tried 9090 and it seems to work when you use TRiLOGI to login to:
127.0.0.1:9090
The only reason I can think of is that there may be another program in your PC that has already opened the TCP/IP port #9080, which therefore did not allow TLServer to open port 9080 to listen to incoming TCP/IP packets from TRiLOGI. You may want to try running the TLServer with the Java console and see if the program throws an exception message when it attempts to open the port #9080. In any case, changing to another port number resolved this rarely encountered issue,
