This is what happened when installing the release deb file via apt and dpkg -i:
mrwm@wksp2:~/Downloads$ sudo apt install ./virtscreen.deb
[sudo] password for mrwm:
Reading package lists... Error!
E: read, still have 8 to read but none left
E: Internal error, could not locate member control.tar.{zstlz4gzxzbz2lzma}
E: Could not read meta data from /home/mrwm/Downloads/virtscreen.deb
E: The package lists or status file could not be parsed or opened.
mrwm@wksp2:~/Downloads$ sudo dpkg -i ./virtscreen.deb
dpkg-deb: error: './virtscreen.deb' is not a Debian format archive
dpkg: error processing archive ./virtscreen.deb (--install):
dpkg-deb --control subprocess returned error exit status 2
Errors were encountered while processing:
./virtscreen.deb
This is what happened when installing the release deb file via
aptanddpkg -i: