Very frustrating, I've used Arduino program for many months and I am now having a big problem. When I tryto launch the program I get the opening screen and then it seems to freeze. After several minutes I get a "launch4j" error message. "an error occurred when starting the application".
After many hours of searching on the net I've tried the following without luck:
Completely removed and reinstalled both latest Java and Arduino022
Disabled wireless mouse
Disabled antivirus program
Disabled wireless internet
Launched as Administrator
If this is a 64bit version of winblows: I think I've recently read a post where somebody claimed that installing 32bit apps to a 'Program Files(x86)' folder did the trick. I wouldn't know why and how, but maybe it helps.
My other suggestion would be: "format c:\" (don't).
I had the same problem with Win Vista. It began after a Windows Auto Update process had problems. I tried the Restore process, no luck. I tried everything referenced above, no luck.
I finally scrammed the HD and restored from backup. THAT worked.