I've recently started writing a long academic paper and some other problems forced me to update MikTex to a current version. I ran the Updater (Admin) several times. Now I have two issues. The TeXworks gui has horribly oversized fonts in its user interface, the fonts are over the top big. But I could carve my eyes out and live with that. The main problem is that when a package is missing (e.g. the url package in this case), the install package dialog pops up during compilation and upon clicking ok, crashes pdflatex. If I try adding the package via Package Manager (Admin), I get the following crash:
Unhandled exception at 0x77d4dd10 in mpm_mfc_admin.exe: 0xC06D007E: Module not found.
Any idea which module might be missing? This is just another problem on top of many problems. I gradually destroyed my document and now also the MikTex installation ... great. I should get a job in the industry.
EDIT
When running from Texworks, I can also see the following texify log:
2016-01-06 22:35:38,101+0100 INFO texify - running 'initexmf --quiet --update-fndb' to refresh the file name database
2016-01-06 22:38:36,070+0100 FATAL texify - TeX engine failed for some reason (see log file).
2016-01-06 22:38:36,070+0100 FATAL texify - Info:
2016-01-06 22:38:36,070+0100 FATAL texify - Source: Programs\MiKTeX\texify\mcd.cpp
2016-01-06 22:38:36,070+0100 FATAL texify - Line: 1452
2016-01-06 22:39:15,023+0100 FATAL texify - TeX engine failed for some reason (see log file).
2016-01-06 22:39:15,023+0100 FATAL texify - Info:
2016-01-06 22:39:15,023+0100 FATAL texify - Source: Programs\MiKTeX\texify\mcd.cpp
2016-01-06 22:39:15,023+0100 FATAL texify - Line: 1452
2016-01-06 22:39:59,289+0100 FATAL texify - TeX engine failed for some reason (see log file).
2016-01-06 22:39:59,289+0100 FATAL texify - Info:
2016-01-06 22:39:59,289+0100 FATAL texify - Source: Programs\MiKTeX\texify\mcd.cpp
2016-01-06 22:39:59,289+0100 FATAL texify - Line: 1452
2016-01-07 09:48:48,398+0100 INFO texify - running 'initexmf --quiet --update-fndb' to refresh the file name database
2016-01-07 10:11:36,304+0100 INFO texify - running 'initexmf --quiet --update-fndb' to refresh the file name database
2016-01-07 10:12:31,617+0100 FATAL texify - MiKTeX encountered an internal error.
2016-01-07 10:12:31,617+0100 FATAL texify - Info:
2016-01-07 10:12:31,617+0100 FATAL texify - Source: Libraries\MiKTeX\Core\MemoryMappedFile\win\winMemoryMappedFile.cpp
2016-01-07 10:12:31,617+0100 FATAL texify - Line: 155
And the error is the same:
Unhandled exception at 0x77d4dd10 in pdflatex.exe: 0xC06D007E: Module not found.