Trying to download the ARM::CMSIS-RTOS pack my mouse is hovering over and I get the errors in red at the bottom ("Cannot download file http://www.keil.com/pack/ARM.CMSIS-RTOS_Validation.1.1.0.pack: Cannot write destination file"). The project is saved in a file I have complete access to - the only answer I've found for why this may occur.
Any help would be massively appreciated. Thank you in advance.