Getting error "Another command [so] is already running"

[dj4maac]

I am getting error "Another command [so] is already running"  when i am running "Enable Blocking Mode" or "Begin Initial Observe Mode" to initiate solidification process.

Solidcore client - 8.2.1-435, Solidore extension - 8.2.1.229, Mcafee Agent - 5.6.2.209

I am not sure why am i getting this error, i have always ensured that i am the only one connected to client. Also i always run one task at a time and wait for its completion before running another one, still i have this error.

When i run "Begin Initial Observe Mode" to initiate solidification process , this is the only task running on client trying to solidify the system. I don't understand why is mcafee solidcore trying to run another so command when it is already running an instance of the same for solidification process? 

I start getting this error "Another command [so] is already running" after "Begin Initial Observe Mode" task runs for 30-40 mins and then this error keeps repeating itself

How can i avoid this error?