Can't say this will work in every situation, but it's possible that the printing protocol is wrong. If you're adding via lpadmin and ipp, try lpd or vice versa.
opensnoop is a command-line tool that comes preinstalled with Mac OS X allowing you to see what's being modified in your filesystem. If you Google some tutorials on it, you'll see that you can track a particular process name like Safari with code like
The only fix I could find for it was in Italian. Here's the original page, and then here's the Google Translate (to English) version of that page.
It involves editing the actual binary file, so make sure you back it up first. If you edit it using nano, you can use the -B parameter to make an automatic backup first:
inline string NAME = "'$pname'";
inline string NAME = "'"$pname"'";
Had this happen once on a Windows machine. Microsoft has several solutions outlined at When attempting to activate Office 2010 receive error "An unspecified error has occurred. Your request cannot be processed at this time. Please try again later. (0x80070190)"
The one that worked for me was 3. Change the UserOperations key under HKEY_LOCAL_MACHINE\Software\Microsoft\OfficeSoftwareProtectionPlatform to have a value of 1.
If you have new users (that's right—new) trying to create a new YouTube channel and then running into errors...
Lots of people have run into this issue, and there many proposed guesses (but no consensus) as to what's the issue and what's the fix:
My Channel and Create Channel are stuck in Infinite Redirect Loop!
Youtube Login Redirect Loop Error
Fix a "redirect loop" on youtube?
I can't say the following procedure will always fix the problem, but the one time I ran into this issue, this was the fix that worked.
Keep in mind once you delete a YouTube channel, Google won't let you delete another one for a long while (there doesn't seem to be an agreed-upon amount of time before you can delete again—I've read anywhere between a week and a month), so choose your YouTube channel name wisely!
For the odd computer here and there I've had LEGO Mindstorms get stuck on the splash screen (we're talking 10-15 minutes or more). A bit of trouble, but I've found going to /Library/Internet Plug-Ins and deleting the Silverlight.plugin, then reinstalling both Silverlight and LEGO Mindstorms seems to fix it.
I ran into an issue with a user running Windows on a Mac. Windows should have taken up the entire drive (which is 250 GB), but Windows Explorer was reporting about 90 GB.
I found the solution here:
I Expanded the Disk in Disk Manager but It Doesn't Show in Windows Explorer
select volume 0
I haven't seen this a lot, but it's common enough that you can find it in a Google search. Here are some of the top results:
- HP 7520 - Printer in Use - won't print from MAC
- I have a new iMac running OS X 10.8.3. I am adding a Windows network printer by IP address. The iMac sees the printer, but when I print it says "Printing-The printer is in use." and hangs forever.
- unable to reset: "printer is in use"
I recently came across this situation with an HP printer, and I thought resetting the printer system was a bit extreme (especially since the user who brought it up had about six or seven printers installed that would have to be reinstalled).
I tried removing the printer and re-adding it. Same problem.
I tried adding the printer to my computer (to see if it was a problem with just the user's configuration or if the printer itself was having issues). I got the same problem on my computer, too.
I went through the HP menus to print out the printer configuration page. It spit out a backed-up print job before printing the printer configuration page, but not all of the backed-up jobs came out, and the "printer is in use" error persisted for both me and the user I was trying to help.
I waited a bit and then saw a message on the printer to hit the checkmark button. I hit it again, and all the backed-up jobs came out and the error went away for both me and the user.
So I don't know if that will always be the solution, but I'd at least give that a try before resetting the printing system.
If you're having printing issues with multiple printers (not just one or two), you may want to reset the printing system (Warning: this will remove your installed printers, and you'll have to install them again).
Re-add the printers.