tried to load connect lightbox and got error message -- error while extracting extension package

Hello,
Quit the extension manager, restart it and then open the "Queue" tab. Then remove the extension from there and install it again.

Teodor, thanks for the response about using queue tab -- I did as you suggested -- got a screen that at top left said "Remove Completed" but then got the same error -- error occurred when extracting extension package. package described as dmxAppConnectLightbox-1.0.2.zxp

what is next?

Hi Jim i was referring to removing the extension directly using the remove button:
https://prnt.sc/irfibt

Teodor,
no such button -- I followed your directions but the window comes up with just a download button. Last night the LIghtbox extension was the only one that showed, possibly because it was set to "seed all download". out of curiosity to see what this did, I changed it to "No seed" and today when I opened it all of the apps were in the list. The all seem to have a Delete button, but not LIghtbox. I took a screen shot that I will attempt to paste in here. If it works you should be able to see what I mean. If not, I hope this explanation is sufficient.
Ok cannot figure out how to add the image so use your imagination.
Jim

If you do not see the delete button, please Log Out of the EM, quit it and restart it.

thank you for being patient -- it took two reboots before the delete button showed up, but it finally did appear and I was able to delete lightbox, closed EM, the reopened EM and was able to update the extension. Problem solved, finally,.