Device Automation stop itself

Hi, 

My robot is working with DA to unzip files using 7z program. In some case, the DA stop while unzipping the files but randomly. I try using the same file, sometimes stop but sometimes not. So, I don't think any wrong with the action step. 

In DA log send out the error as below. Could you please suggest? 



2018-06-20 12:44:11,067 [0xf2c] ERROR com.kapowhub.drivers.automationnative win32automation.cc:320 win32 GetFirstChildElement failed. HR: 80004005
2018-06-20 12:44:11,067 [0xf2c] ERROR com.kapowhub.drivers.automationnative win32automation.cc:320 win32 GetFirstChildElement failed. HR: 80004005
2018-06-20 12:44:11,067 [0xf2c] ERROR com.kapowhub.drivers.automationnative win32automation.cc:320 win32 GetFirstChildElement failed. HR: 80004005
2018-06-20 12:44:11,067 [0xf2c] ERROR com.kapowhub.drivers.automationnative win32automation.cc:320 win32 GetFirstChildElement failed. HR: 80004005
2018-06-20 12:44:11,067 [0xf2c] ERROR com.kapowhub.drivers.automationnative win32automation.cc:320 win32 GetFirstChildElement failed. HR: 80004005
2018-06-20 12:44:11,067 [0xf2c] ERROR com.kapowhub.drivers.automationnative win32automation.cc:320 win32 GetFirstChildElement failed. HR: 80004005

Hi,
I don't have any details about your environment, but for unzipping I don't use DA, it's very complicated and there is much better and faster way. Download the unzip.exe command line utility and use standard robot step called "Execute Command Line". Just learn, how to use this utility. This works for me very well.
BR, Pavel Vraj