On-Premises customers who have upgraded to ControlUp v7.1.x and IOP v3.x may see occasional 'tstats' errrors.
This may be caused by the presence of files named "in_root_folder" in their IOP Activity Files share that is being ingested by the IOP engine. 
All On-Premises customers using v7.1.x should implement this fix:
1) On the Monitor(s) and consoles please create the reg key HKEY_LOCAL_MACHINE\SOFTWARE\Smart-X\ControlUp\Console\RealTimeStats\
2) Create a D_WORD "DisableRealTimeStats" with a binary value of 1
3) Restart the Monitor(s), relaunch the Consoles
4) Delete any files in the IOP Activity Files share named "in_root_folder"
Alternatively, you can also download and import the registry file attached to this article.
If you are currently experiencing the 'tstats' error within IOP and you have not installed ControlUp On-Premises v7.1.x, refer to this article for more information.
If you are currently experiencing the 'tstats' error within IOP and you have installed ControlUp On-Premises v7.1.x, please contact support@controlup.com for assistance.