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I try to copy and paste in a LyX document I am editing and it says that the command (paste) is disabled. This happens with anything, be it normal text, figures or formulae. I am working on a 64 bit PC with Windows 7 and using Lyx 2.0. I checked the document settings in short cuts and they are set. This is so frustrating. Can anyone help me please?

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This may be because Ctrl+V is bound to some other command. Can you paste by using the regular Edit menu? – Werner Feb 2 '12 at 7:17
I suppose that you have a write protected document. That happens for all example documents of the LyX documentation. – Herbert Feb 2 '12 at 7:36

I have the same problem when I use LyX 2.0.2 on 64 bit PC with Windows 7. It happen sometimes, and can be resolved by restarting the LyX. I also use LyX on other OS, e.g., 32 bit Windows 7 and Ubuntu, and never encounter this problem there. Maybe this is a compatibility issue on the 64 bit Windows.

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Just save everything, close it and open it again (restart as Shoreming mentioned). It'll work hopefully. – user14013 Apr 27 '12 at 10:55
Had the same problem - restarting the computer solved it. – user16277 Jul 4 '12 at 20:00
Problem still exists in LyX 2.0.6 (Win7 x64). Restarting LyX still solve the problem. – Juve Dec 3 '13 at 14:34

While I still do not know the culprit of this problem, I think I have found a workaround.

Even when paste is disabled, I found paste recent is still active, so I just binded ctrl+v to paste 0 instead of paste. It seems to be working well so far.

-- Edited --

I spoke too early. It works within LyX, but paste recent does not capture texts copied outside of LyX.

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Did you manage to fix it? I've also run into this problem tex.stackexchange.com/questions/277997/… – Sebi Nov 12 '15 at 20:35
Except my answer, unfortunately no. But in my case restarting LyX fixes the problem so it is not critical. – joon Nov 12 '15 at 21:30

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