pgp:import key (3090:operation failed, unknown error)

My vendor created a new RSA4 key with 2048 bits using PGP Version: Encryption Desktop 10.3.2 (Build 15238) window version. I cannot import the key to PGP Command Line 9.6 build 176 as there is an error pgp:import key (3090:operation failed, unknown error)

Was able to import the same key to PGP e-Business Server(tm) Version 7.0.1 and PGP Command Line 10.3.2 build 12268 on Linux

Is there a compatibility issue for the pgp desktop version 10.3.2 and Command Line 9.6?

Is there a solution?

Please advise.