Working with windows 7, and a mega2560. When I start the Arduino programit takes a long time to start then has an error message "error occured when starting". (Launch 4J) After 5 or 6 minutes, the sketch will come on the screen and the program will function.
Have uninstalled Arduino and reinstaled it several times. But error continues. Problem appears to have started after I tried to download a library item?
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Problem went away after deleting all items in Aduino folder and reinstalling JAVA
Problem went away for several starts but then came back. Has errror message when opening then after a delay, sketch appears.