Error compiling: Error 4 The assembly [...] must contain a strong signature to be marked as a prerequisite

The assembly you are trying to compile seems to have a assinature strong , probably to ensure its authenticity.

Consequently, all libraries imported by the project also have to have a signature. It looks like you're trying to import an unsigned library.

You have several solutions:

• Ask the author of the library to sign the assembly
• If the library is open-source, you can get the source code, sign it, and import this custom version with signature
• Disable your assembly signature