Critical Steps to repro:
1. Install JBDS 4.1.1.CR2 (GA) or JBDS 5.0.0.M4 from any of these:
jbdevstudio-product-win32-5.0.0.v201110271830R-H42-M4.jar jbdevstudio-product-eap-win32-5.0.0.v201110271830R-H42-M4.jar jbdevstudio-product-win32-4.1.1.v201110271900R-H748-GA.jar jbdevstudio-product-eap-win32-4.1.1.v201110271900R-H748-GA.jar
2. Next, try to uninstall from the menu item, which tries to run this:
C:\Users\nboldt\jbdevstudio-product-win32-4.1.1.v201110271900R-H748-GA\studio\jbdevstudio.exe -Dizpack.mode=privileged -jar "C:\Users\nboldt\jbdevstudio-product-win32-4.1.1.v201110271900R-H748-GA/Uninstaller\uninstaller.jar"
3. The result is that JBDS is launched – seems the flags are simply ignored.
4. Suggest that instead, we run this w/ the Run in folder left blank instead of set to the Uninstaller folder:
"C:\Users\nboldt\jbdevstudio-product-win32-4.1.1.v201110271900R-H748-GA/Uninstaller\uninstaller.jar" or java -jar "C:\Users\nboldt\jbdevstudio-product-win32-4.1.1.v201110271900R-H748-GA/Uninstaller\uninstaller.jar"
That way the resulting leftovers are minimal – if we Run In the Uninstaller folder, it won't be deleted even if the [x] Force removal box is checked. Note too that with that box checked, the install folder, eg., "C:\Users\nboldt\jbdevstudio", is NOT deleted.