It seems to be a temporary problem occur in the O/S and Java JRE and not a problem of the application program. I would imagine the problem should go away once you restart your computer? Or is this problem repeatable?
What JRE version you are using? You should upgrade to JRE 1.4.2 or later if your JRE is too old.
We have recently released TRiLOGI version 6.2 and TLServer 3.15. We recommend that you upgrade to this new TRiLOGI version which should work well with JRE 1.5 and 1.6.