Getting the following errors when trying to install App Connect:

An error occurred while extracting the extension package dmxAppConnect-1.7.3.zxp

Cannot remove it from queue tab.

Mac OS Mojave 10.14.6

Using both Dreamweaver 2015 and 2019 - same error regardless of the selection in Extension Manager.

Hi Steve,
Open the Extension manager, go to Queue tab and remove the extension from there.
Quit the extension manger, and restart it - then install the extension again.

There's no way to remove it from the queue like I said in the original post.

Try quitting the EM fully and restart it, you will be able to remove it then.

That worked and had to refresh once, but it has been installed now. This can be closed.