The compatibility with various Operating Systems and java versions were tested with the following results. Testing was limited to the ability for the OS to recognize the comm ports (functions such as opening cash drawer)

For the versions needing the comm port files, please follow steps:

Issue is because of comm configuration for which we have do manual config in Windows 7

1. Place the win32com.dll into <JDKHOME>\jre\bin directory

2. Place the comm.jar in <JDKHOME>\jre\lib\ext

3. Place the javax.comm.properties in <JDKHOME>\jre\lib

All above files are attached - on right