Error(18) when activating
Error(18): The directory or file for storing the License file (CDM) is write-protected. Please ensure that you have read-write permissions for this directory or file and try again
The above message indicates an access permission issue with the license file used in Red Suite or LPCXpresso IDE. You will need to ensure that Red Suite or LPCXPresso IDE have full read/write access to the license files and directory - please see FAQ Where is my license (CDM file) stored for details.
Red Suite 3.5.0
There is an issue with Red Suite 3.5.0 in that in some circumstances will fail to correctly install a new license, and give the error If you encounter this then please manually create the subdirectory 'red_suite' in the the appropriate location, as detailed in the FAQ Where is my license (CDM file) stored.
Alternatively, you can update to Red Suite 3.5.3 (or later).