I have installed incorrectly a package for which there was no archive. Need to remove
I installed a package that now prevents my using Synaptic and otherwise blocks updates etc.
I have tried the partial upgrade scenario but it won't remove it.
I used - apt-get -f install (bad file name)
The response I get is - The package (bad filename) needs to be reinstalled, but I can't find an archive for it.
I tried several other apt-get approaches but the answer is the same.