Hi All, I am trying to run a java based communication client developed for winidows to run on Ubuntu/Wine. First I tried installing the app without having JRE under Wine, it halted with an error while installing JRE. So, I installed JRE separately under wine and then the application. It installed correctly. Now, when I run the application, it starts (I can see it under the process list) and then crashes (the process disappears). I tried running the app through command line using the following. export WINEDEBUG=1 ; wine /path/tp/app.exe Here is the output. fixme:reg:GetNativeSystemInfo (0x327800) using GetSystemInfo() USER.DIR=Z:\home\androit USER.DIR=Z:\home\androit java.lang.NullPointerException at java.io.File.<init>(Unknown Source) at com.company.app.findCurrentVersion(Unknown Source) at com.company.app.main(Unknown Source) at org.eclipse.equinox.launcher.Main.run(Unknown Source) Can you please help me with this? What do I need? Thanks, PD