java.lang.NullPointerException Problem

[irishMEngineer]

I've been using the Compiler for a long time with no problems now all of the sudden I'm getting the following errors :

Code: [Select]

java.lang.NullPointerException
     at processing.app.debug.Compiler.compile(Compiler.java:75)
     at processing.app.Sketch.build(Sketch.java:1412)
     at processing.app.Sketch.compile(Sketch.java:1203)
     at processing.app.Editor$44.run(Editor.java:1807)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) I'm searching for the latest java update now to see what happens. I tried uninstalling the compiler and reinstalling  just to get the same problem. Looking to see if anyone else has had this problem and found a fix. If it helps I'm running Windows 7 64-Bit. I usually don't have problems figuring this stuff out but I'm puzzled right now.I have tried to just verify every simple sketch included and some I wrote and this occurs. If I try to upload it's the same as well. The java update did nothing.

[irishMEngineer]

Well I got it working again, after another update and cleaning out some temp folders.

[scottchiefbaker]

I get those errors maybe 1 out of every 10 times. Usually I just hit compile again and it's good to go. Was the problem occurring every time?

[andrea0206]

I'm still having the same problem what should we do to solve it?

[PaulS]

Does the problem persist no matter what sketch is being edited?

[Vini]

I'm having the same problem!
can anyone help us?

[PaulS]

I'll ask the same question I asked earlier. Does this exception occur when compiling any sketch, or only a specific sketch?

If it is a specific sketch, post it.

[Vini]

@PaulS

This occur when compiling any sketch (like the blink one)

[andrew0]

I got a java.lang.NullPointerException when I reinstalled the Arduino IDE and tried to compile a sketch without selecting a hardware board. Make sure something (e.g. Duemilanove with ATmega328) is selected under the Tools, Board menu first.

Andrew

[Vini]

BINGO!

Congratulations Andrew, you solved the problem!

THANKS!  

[andrew0]

Yay!