Error: unknown object in stream: 21

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Open mail in K-9 encrypted in Symantec PGP desktop.
2.When clicked for decrypt a message, APG wants password, but its, say. 
Symmetric encryption. And wants password, but normally, there is a name of my 
key.
3. When i put in my password nothing happened, just write down in screen 
"Error: unknown object in stream: 21"

What is the expected output? What do you see instead?

https://goo.gl/4UCTKo

-----BEGIN PGP MESSAGE-----
Version: 10.3.2 (Build 15238)
Charset: iso-8859-2

qANQR1DBwEwDNFlQ0BFbHYsBB/0btfVB5T0Uiv0QF/HRPRHu4bfQLFvQ7g+p03c2
Rclwhvi0E7o+7JGBZoHbnCxBgBoxCd/rpvPBsevpOfINst6Guz2Gr92mZaeTgOl1
Kg3mIwWo53Tp2JephxM5xw9ncRYf1a69H3OSNpHgq4Rl8Nuir8Q59KK5F6xkRBkz
qvuCpvqq0P6ziKZHIqAErHlzk0zjJsGCdcIeEGayJvy2546GpyuKCA5HvLG9Dyz2
lxnAYTpcasDiTx7uJDhKYrAnrgSZAmyz8XA2CgP4cTSPHeEoVPXzMgA2pHdejONo
dA9vNSAHq5kN9SoietyteeeCehh8djdMIuM1hnmqnYFqFHtK0jwBUg2Hsfxl9+a/
GTMSUqe4cntUSFRs2MZamoXXhFz/4AfeUcy+dz8bDrcTfRBgL4WObzmpovRo49mX
UHU=
=WImw
-----END PGP MESSAGE-----

What version of the product are you using? On what operating system?

APG v1.1.0

Please provide any additional information below.

Its doing on every message that is encrypted by Symantec PGP Desktop

Thank you very much for answers.

Original issue reported on code.google.com by david.li...@gmail.com on 23 Jun 2015 at 5:41

[GoogleCodeExporter]

I also found that, when you copy pgp block message encrypted in symantec and 
paste it manually in APG, it decrypts without problem.

Original comment by david.li...@gmail.com on 9 Jul 2015 at 7:38