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[on:]

Hey guys,

I just received my Arduino Uno R3 a few minutes ago and I've written my first program (basic flashing LED). However, when I try to compile my code I get the following error:

D:\Documents\Arduino\Arduino 1.0.2\hardware\tools\avr\bin\avr-ar: unable to rename 'core.a'; reason: Permission denied

This also happens when I try compiling one of the example programs. I've tried editing the permissions in the folder containing avr-ar to no avail.

Does anyone know how to fix this?

Thanks,

Felix

[Reply #1 on:]

I've tried editing the permissions in the folder containing avr-ar to no avail.

Is that where core.a is? If not, then you are diddling with permissions on the wrong folder.

Enable verbose mode for compiling (File + Preferences) to get more details about what is going on.

[Reply #2 on:]

Hey guys,

I just received my Arduino Uno R3 a few minutes ago and I've written my first program (basic flashing LED). However, when I try to compile my code I get the following error:

D:\Documents\Arduino\Arduino 1.0.2\hardware\tools\avr\bin\avr-ar: unable to rename 'core.a'; reason: Permission denied

This also happens when I try compiling one of the example programs. I've tried editing the permissions in the folder containing avr-ar to no avail.

Does anyone know how to fix this?

Thanks,

Felix

Post more info
Are you running windows 7?
Is there any firewall on your system?