PROBLEM:
non-installable applications, a.o. Midnight Commander
(mc 4.6.2-pre1-1maemo5)

-I add Maemo-Extras-Devel repo (temporarily...) - OK
-I find mc in the Application Manager list - OK
-I try to install that - FAIL. AppMan sees it as not-installable. Message (translated "Missing application packages: file".

I own the N900 for just 1 week and I'm quite a noob at Linux (or root access as such). I may have installed 1 or 2 things too eagerly (tho I tried not to; btw I have not given any X Terminal commands other than pwd, ls and cd. Had apps only installed by Application Manager). I try to get wiser on this Linux site

Other missing packages:
-gstreamer0.10-plugins-bad-extra (for Extra Decoders Support 0.3.4-1)
-xsltproc (for KMPlayer 0.10.3.903-1)

WHAT DUN (perhaps relevant?)
-aMSN - tried to update it to 0.98.3, did NOT go well
-tried uninstall aMSN and to reinstall - FAIL, tcl and tk (I think tcl8 and tk8) went missing
-reflash with maemo_flasher-3.5_2.5.2.2 - OK (phew...)
-install aMSN (version 0.98.1-1 again as that had worked) - OK

QUESTION:
Is it possible to check whether essential files are still there? For instance, using Storage Usage 1.1.0 and checking on some list (which I can nowhere find.

Any help appreciated.