Yours is probably a different issue - mshtml.dll in your message is the thing causing Xibo to crash. That is the core dll for the webbrowser control Xibo uses to show text/web content.
The exception code: 0xc0000005 usually indicates some memory issue, not necessarily running out of memory, but accessing some memory it shouldn’t access.
There are some reports of this being due to an incorrectly registered javascript dll - which you could try to reregister:
C:\Windows\System32\regsvr32.exe C:\Windows\System32\jscript.dll
C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\jscript.dll
The unfortunate fact of the matter is that when mshtml does go, there is very little we can do to stop it taking out the rest of the application. Setting aside any dll related issues, it is most likely to be something on a webpage you are displaying causing the problem.
We have been making some improvements to tighten the integration with the Xibo watchdog, which we will release with 1.7.8. These improvements should help get Xibo started up again. A plaster/bandaid rather than a cure.
Edit: I forgot to say that the very first thing to do (before the above) is to open Internet Explorer (32bit mode) and disable any browser add-ons installed.