To fix the error "The NSP file is missing a Program-type NCA"

Troubleshooting Nintendo Switch Emulation: How to Fix "The NSP File is Missing a ProgramType NCA"

• Reboot your Switch.
• Launch the updated installer.
• Attempt installation again.

update NSP

If you’re trying to pack an or DLC NSP without the base game:

: Ensure you are launching the base game NSP (usually labeled with ) rather than an update or DLC. If using a manager like Steam ROM Manager

In some cases, converting the NSP file to another format or using a different type of file (like a XCI) might circumvent the issue, although this depends on the specific use case and requirements.