when i have the placed the extension onto a page, then when i save and close the page in DW8 i get a error which forces the closer of DW8. The error is as follows - "the instruction at "0x5ad71531" referenced memory at "0x000000014". The memory could not be "read".
Has anyone came across this if so whats the fix??

I periodically have the exact same problem. I have to save my pages often in fear that I could lose them for this reason. I don't know a fix yet.

Had the same problem and after a while I found out that it is a registry error and it is solved using a registry repair software like
free-window-registry-repair.softonic.com/
It worked for me