Is this normal error in Client?

[nitehawk 4]

Only joined for 3 days to trial but am blown away with how quick it is and the client is awesome

anyhows in my logs i see this error

in the **

is this a bad thing?

Thanks

. 2015.08.28 17:02:39 - OpenVPN > VERIFY EKU OK
. 2015.08.28 17:02:39 - OpenVPN > VERIFY OK: depth=0, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=server, emailAddress=info@airvpn.org
. 2015.08.28 17:02:43 - OpenVPN > Data Channel Encrypt: Cipher 'AES-256-CBC' initialized with 256 bit key
. 2015.08.28 17:02:43 - OpenVPN > Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
. 2015.08.28 17:02:43 - OpenVPN > Data Channel Decrypt: Cipher 'AES-256-CBC' initialized with 256 bit key
. 2015.08.28 17:02:43 - OpenVPN > Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
. 2015.08.28 17:02:43 - OpenVPN > Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
. 2015.08.28 17:04:52 - **OpenVPN > Authenticate/Decrypt packet error: packet HMAC authentication failed**
. 2015.08.28 17:26:00 - Updating systems & servers data ...
. 2015.08.28 17:26:02 - Systems & servers data update completed