Hi , a few months ago i start to having troubles with frd.exe, when i double click the link apper for a few second the images of the program but then it ends and doesn't give me any messege of error

Here's the log.

27-jul-2010 17:37:10 cz.vity.freerapid.core.MainApp checkBugs
INFO: You are running FRD with JVM version = 1.6.0_21 - (min 1.6.0_07 is required)
27-jul-2010 17:37:10 cz.vity.freerapid.core.OneInstanceClient checkInstance
INFO: Testing existing instance
27-jul-2010 17:37:10 cz.vity.freerapid.core.OneInstanceClient checkInstance
INFO: Application is already running. Exiting

i just can't use the program, hope someone can help me

PD: i just updated Java V. 6 update 21