An error occurred while in high CPU usage

I’m getting the following error as shown in the image below whilst utilizing Notepad++.

Application Error
Exception EAccessViolation in module HTML Tag _unicode.dll at 0005EDC8.
Access violation at address 0480EDC8 in module
‘HTML Tag_ Unicode.dll’. Read of address 6AF54E60.
It is perhaps an application error coupled with an access violation at the address 0480EDC8 in the module.
What kind of error is this and how can I able to lick this problem?
