Unable to copy and paste after Mountain Lion upgrade

Hi all,

Working on a MacBook Pro from 2010, after upgrading to Mountain Lion I cannot copy/ paste in Firefox or into/ out of gmail at all. Also, I cannot move the arrows inside Firefox, including on gmail. This forces me to use the cursor to find my place and the delete button, which is massively time consuming and irritating. In addition, I cannot copy/ paste across several different applications (but it works in some cases).

Does anyone have any tips on what might be going on with my browser and why the copy/paste might connected to the arrow keys?

Any help appreciated--this is driving me a little crazy!

mst

same issue here, unable to copy/paste after sometime of reboot!

I have the exact same problem. I called Apple Care and they said they have never heard of this problem. Never! They were very nice, but after doing this and that and that and this, their "final" suggestion was to reinstall Moutain Lion, well OK the whole operationing system. I said will I lose all my data? The guy said "I don't think so". He suggested that I look online for instructions. I kinda thought they could answer that, but hey, who knows. I do the time machine backup. I will do the MLB suggestion and see if that works. When I log out and log back in, everything is fine for "awhile", then cutting and pasting stops working in all applications. Word and Pages. I cannot drag or drop either. Not in iTunes nor Mail. 🙂 So, in a few days I will reinstall the operation system as it kinda kills using the computer. Now if it still does it after all that, then its "must" be a hardware problem. Its nice I bought the extra warranty. What else could it be??? But, I will do this MLB step. Then reinstall the OS. I have put that off. So thanks for the post......we will see.

I just got rid of NextDef. I will see if that works. 🙂

Please post back and let us know if it works. I'm having a completely different problem with my Mountain Lion install. It's a real bad issue that's gotten me bumped up to the higher level tech support people (the ones that give you their phone number and extension). I've made sure to let him know about this NextDef/copy-paste issue which he logged. He did say that there wasn't any records in their database about this issue so it must be only affecting a few people. That's why I was so thankful to find this post. Here it is a month after installing NextDef and I'm not having that issue any more.

I removed Nextdef last night. My copy and paste, drag and drop problem has not yet returned and its been over 9 hours. Longest "no problem" time yet. I hope that doesn't return like a bad movie ending. 🙂 So we will see. I am glad to have found that suggestion.

You solved my issue. Thanks so much! To say the least....Its been working fine since I said goodby to NextDef. 🙂

High kV, Oh thanks for posting the original solution. Its not 24 hours and still working great!!

Put the MBP into instant sleep using option,cmd,eject. The screen should go black. Dwell 30 secs re awaken by pressing return. Cut and paste, drag and drop are then back and working normally.

Possibly a short term solution and the same as rebooting, but I would submit that if NextDef is installed on that MBP, the problem will return within 15 mins or so. Seems uninstalling NextDef is the best solution, at least until MLB releases a patched version of the plug-in.

I was having same issues with cut and paste plus drag and drop. Reboot and sleep would only help for an hour or less as well. I unistalled NextDef 4 days ago, rebooted, and it has been working perfectly ever since.

Thanks High kV

@ Damien-007

I think he meant these... From within terminal:

cd /Library/LaunchAgents

cd $HOME/Library/LaunchAgents

In my case, there's nothing in either location that looks like it could be the culprit except maybe 1Password (since it autofills web logins) but I've tried anyway. We'll see how it goes.

I have the exact problem as well.... In Fact, I am on the phone with Apple care ( on hold) at this very moment! I will reference this link and others. Stay tuned...

Message was edited by: bigalaska

We should not have to install anything... Apple will fix this or else it's going back

FYI... The Apple Care tech do not look at any of these threads, due to it being user content. I am sure somebody at apple looks at these post. It's just not the apple techs.