Unable to compile

Hi,

I always get this error when compiling the sketch.

C:\arduino-1.0.5-r2-windows\arduino-1.0.5-r2\hardware\tools\avr\bin\avr-ar: malloc.c.o: No such file or directory

I have tried reinstalling the ide several times already, and still get the same error. I am using windows 7 ultimate. Any help would be appreciated.

Thanks!