Using jPortable Launcher and jPortable JRE and it works with other jar files. However, I have a particular jar that needs to be told what other file to use for its purposes upon launch. So, in the same folder as that jar I put thenameofthe.jar.portable.ini and changed "thenameofthe" to the name of the jar. I then edited the ini and on the AdditionalParamaters= line added the name of the other file that the jar needs to use. What should happen is the jar then accesses that other file, runs a conversion on it, then saves the output to the final converted file. But, that's not happening... it's not creating that final output file. Based on the info I've read within the above-referenced ini file this should be working. So, at this point I'm not sure what the problem is. BTW: I know the jar file works because it did what it was supposed to do properly when I had java installed on the same PC. So, that's not the problem. It just seems to be that jPortable Launcher isn't passing along the parameter specified in the ini. Any ideas? Thanks!