# Can't install any LaTeX package [closed]

I have a big problem with LaTeX. Quickly said, I can't install any package. I'm using MiKTeX 2.9. I have tried to install many packages (manually or via `mpm`), but every effort was useless. For example, I tried with `qcm` package. I opened the mpm, clicked "+" on the package, then on the options I clicked on "Refresh FNDB", but as I run MiKTeX, it can't recognize the package, as every environment of that package gives an "unrecognized command" error. Also, the on-fly installation doesn't seem to work. I read that you need to write `\usepackage{*selectedPackage*}` to trigger the on-fly installation, but as I compile the file, nothing happens. For another package, the `paperandpencil`, I tried a manual installation, but the `.sty` file is nowhere to be seen by MiKTeX. Can anyone tell me what's the problem?

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I'm slightly confused. Did you install the `qcm` package using `mpm` (it will have an 'installed on' date if you did)? If so, what happens when you `\usepackage{qcm}`? – Joseph Wright Nov 13 '12 at 20:16
Did you try to open the adm option on Programs' menu? – Sigur Nov 14 '12 at 0:18
@JosephWright it results as installed yesterday. If I `\usepackage{qcm}` in the editor I get no error, but I can't get to work any of the qcm environments in my file. – Marco Nov 14 '12 at 13:12
@Sigur I did it – Marco Nov 14 '12 at 13:14
@Marco I think a MWE of your failing input would be handy: it may be that there is something wrong separately from any package installation issues. – Joseph Wright Nov 19 '12 at 13:45

## closed as too localized by egreg, bloodworks, Joseph Wright♦Jan 5 at 21:34

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