if you wanna take in game shot,

will be error from dota2 client


like this

Attachment 45328
( mean like 'This operation can not be performed while running in addon Restricted Tools mode')
* i using Korean dota2 clinet, so i used goolgle translator


Solution

1. just one time push 'record' button in SFM client
2. push 'record stop' button before record
3. back to the dota2 client, make lobby