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Font problems after 10.6.7

I'm getting lots of strange behaviour relating to fonts since updating to 10.6.7. This is all in things that used to work perfectly.
PostScript output causes errors in Distiller (problems in font definitions); and manipulating PDF objects can cause embedded fonts to become .... unembedded.

As I understand it, there were lots of security fixes to font handling in the update, but it seems to have caused loads of trouble.

The developers for an app I use, Imposition Wizard, have confirmed that things aren't working as they are supposed to and have filed bug reports with Apple.

However, as I do a lot of work with PostScript and PDFs, I will have to reinstall the OS to 10.6.6.

iMac 2006 2Ghz, Mac OS X (10.6.7), MacBook 2008

Posted on Mar 22, 2011 3:07 PM

Reply
424 replies

Apr 9, 2011 8:18 AM in response to dandeliondigital

How could Apple ever allow an upgrade that is so flawed out of it’s quality control?


You can be sure it wasn't intentional. But sometimes big, should-be-obvious things get past multiple people.

Many years ago, one of my first jobs was running a small press. The guy next to me was just about ready to run the real stock through a 20" press on the job he had. I went over to see what he was working on "just because".

It was a job for the Minnesota Zoo's annual "Walk With the Animals" fund raiser. There were tickets, a flyer and a small poster all on one sheet. Very thing thing I noticed. The title on every component read "Walk the With Animals". In 2" high letters no less on the poster. I showed it to the other pressman and he shut the press down immediately after only using about 10 sheets of the job stock.

The plant manager came out to a bit later to thank me for catching it. He said at least 30 different people had looked at, and approved the design over the course of a couple weeks. It got by the zoo staff, the designer himself, the printing company's salesman, the prepress staff that stripped up the negs and made the plate for the press. And ultimately, even the guy running the press.

So anyway, when I see these kinds of things, it makes you shake your head in disbelief, but I've seen similar instances at least a dozen times.

Apr 9, 2011 11:20 AM in response to dandeliondigital

dandeliondigital wrote:
How could Apple ever allow an upgrade that is so flawed out of it’s quality control?


That is one of the most difficult parts about this issue. The upgrade isn't flawed at all. Apple hasn't made any errors. They did not test with OpenType Postscript fonts in Acrobat. They probably did test lots of other things with Acrobat, but didn't use Postscript fonts.

People read all these postings here and on other web sites and come away thinking "Apple released a buggy 10.6.7". NO! They didn't! There isn't anything wrong with it. The bug is on Adobe's side. The problem is that the bug is 20 years old and cannot now be fixed. It is installed on a hundred million PCs and printers around the world and isn't ever going to be updated.

It is easy for armchair programmers to condemn Apple for failing to test this one case. They should have, but mistakes happen.

Apr 9, 2011 11:35 AM in response to etresoft

etresoft wrote:
dandeliondigital wrote:
How could Apple ever allow an upgrade that is so flawed out of it’s quality control?


People read all these postings here and on other web sites and come away thinking "Apple released a buggy 10.6.7". NO! They didn't! There isn't anything wrong with it. The bug is on Adobe's side. The problem is that the bug is 20 years old and cannot now be fixed. It is installed on a hundred million PCs and printers around the world and isn't ever going to be updated.


How can you be sure that the bug is on Adobe's side and that the bug is 20 years old? These fonts work fantastically well in a huge number of applications across multiple platforms and operating system versions, but not in OS 10.6.7.

Who ever was at fault 20 years ago, it is Apple that appears to be at fault now.

Apr 9, 2011 11:47 AM in response to SS_MedPhoto

SS_MedPhoto wrote:
How can you be sure that the bug is on Adobe's side and that the bug is 20 years old?


Because I've inspected the files byte for byte.

These fonts work fantastically well in a huge number of applications across multiple platforms and operating system versions, but not in OS 10.6.7.


There isn't anything wrong with the fonts. The issue is how they are encoded inside the PDF. There isn't anything wrong with the way they are encoded inside the PDF. Adobe (any anyone who uses Adobe's code) doesn't expect them to be encoded in that particular (but perfectly valid) fashion.


Who ever was at fault 20 years ago, it is Apple that appears to be at fault now.


At fault? That part I disagree with. Adobe is at fault for pushing a "free and open" PDF specification and selling/giving away software for 20 years that does not comply with said specification.

I feel this is Apple's bug to fix, but only because Adobe isn't going to and people are going to blame Apple for it anyway. The burden is on Apple to revert their PDF software to the PDF standard implemented (although not documented) by Adobe.

Apr 9, 2011 12:02 PM in response to etresoft

etresoft wrote:
The upgrade isn't flawed at all. Apple hasn't made any errors. They did not test with OpenType Postscript fonts in Acrobat. They probably did test lots of other things with Acrobat, but didn't use Postscript fonts.

People read all these postings here and on other web sites and come away thinking "Apple released a buggy 10.6.7". NO! They didn't! There isn't anything wrong with it. The bug is on Adobe's side. The problem is that the bug is 20 years old and cannot now be fixed. It is installed on a hundred million PCs and printers around the world and isn't ever going to be updated.


Please show your evidence for these assertions. To which Adobe "bug" are you referring?

Please explain why products with no Adobe code in them at all now fail under 10.6.7 with OpenType PostScript fonts, when they worked under all previous versions of Mac OS. (For instance, Sibelius is not able to display scores correctly on the display screen if elements of the score are taken from OpenType PostScript fonts).

Apr 9, 2011 1:17 PM in response to Thorzdad

Thorzdad wrote:
You do know that the 10.6.7 update also resulted in Postscript font rendering corruption in Flash files, right? This problem isn't exclusive to PDF creation or the PDF specification. This is about how OS X treats OT/PS fonts.


Can you embed fonts in Flash files? If so, then that is likely the cause. It is more likely to be a memory corruption issue inside Flash. Whereas Acrobat Reader just crashes, Flash may keep running, but with corrupted memory.

I'm not a Flash developer so I can't do anything more than speculate on that. For the PDF files, I extracted the binary data representing the compressed, embedded font. The 10.6.7 data was compressed differently than in 10.6.6. The compression still seemed to be valid. Both sets of data decompressed to identical files. I verified this with checksums.

I'm not disagreeing with you, but it may be a data compression issue rather than a font rendering issue. On Windows, other PDF readers can open 10.6.7 PDF files so that leads me to suspect the problem to be with Adobe. There isn't any other Flash software.

Apr 9, 2011 4:07 PM in response to Kurt Lang

RESOLUTION 100% no need to go back to 10.6.6

I used FontXchange (1 month trial) from FontGear Inc, to convert all the font affected by 10.6.7 bug (Mostly Bitmap and PostScript Type 1) to Open Type (.otf)
Uninstall all old problem font and install the new converted fonts.
Checked all OSX font folders using Font Doctor to make sure no duplicate or broken Postscript left and NOW ALL IS WORKING FINE AGAIN, even old pdf that were displaying the font problem are now OK.

Font problems after 10.6.7

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