Opening PDF files in Acrobat or Reader, from the Internet, give me a font error

Error:
Cannot find or create the font 'font name'. Some characters may not display or print correctly.

I get this error with almost any PDF I open from the Internet. I am not actually missing any of the named fonts. In fact, even PDF files I've created myself that open fine from my hard drive or server give me this error once they are loaded onto my website.

I have tried uninstalling and reinstalling Reader (but haven't done so with Acrobat). I have also tried changing the settings for the file type extension to open with Reader instead of Acrobat. Still no luck. (My preference is to default to Acrobat Professional).

Another peculiar thing about this problem is that I only get the error the first time I try to open the file online. If I close it and click on a link for a PDF I have previously opened, the fonts display correctly with no error.
designsbymlgAsked:
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BigBadWolf_000Commented:

Repair Adobe from the Add Or Remove Programs control panel
Choose Start > Run, type appwiz.cpl in the Open text box, and then click OK to open the Add Or Remove Programs dialog box.
Select Adobe Reader
Click Change/Remove.
In the Setup dialog box, click Next, select Repair, and then click Next again.
Follow the on-screen instructions to complete the repair
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designsbymlgAuthor Commented:
This solution fixed the said problem, however, now my serial number is no longer being accepted and I've been forced into a trial version.
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BigBadWolf_000Commented:
when you try to re-register with your SR# what is the exact error displayed??
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BigBadWolf_000Commented:
You can try Adobes License repair tool

http://www.adobe.com/support/contact/licensing.html


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designsbymlgAuthor Commented:
The exact error reads:

You must enter a valid serial number before activating online or viewing activation options. Please check your serial number and re-enter it.

My thought was that my serial number is for the Creative Suite 3 and not for Acrobat, but I don't know how to find the serial number for just that application.
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BigBadWolf_000Commented:
You will have to call Adobe tech support and they will reset or issue u a new key...
the registration should not be damaged on a repair...but Adobe's licensing system is very strict and any changes to the software can sometimes cause a licensing issue, which is a bug, not the norm.


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