Trying to upload a mib file I got from the manufacturer QNAP fot model TS-509. However, it cant be uploaded in the MIB Browser. It just says "Cant upload MIB".

If i drop the mib file to the Opmanager server in folder Opmanager\mibs I can see it in the browser but I cant select it. Error message:

Error parsing MIB:NAS.mib
Exception while loading MIB:Could not parse the file C:/Program Files/AdventNet/ME/OpManager/./mibs/NAS.mib. Couldn't resolve these sequence constructs : { IfPackets }

Am I missing something?

PS. Im attaching the mib file