Hi friends,

When I updated to FB4 from FB2 in order to be able to provide my apps for OS 
X, I found that my routine for opening user files failed for a small number 
of users.  Since I couldn't replicate the issue, I tried some cookbook cut 
and paste and added FN FbwdToPbwd (PBlk&) just before my FN PBHOpenAsync 
command, as was mentioned in one of the FB conversion help files.

That worked for those customers when they were opening the file for input, 
but broke when they were opening a different file for output.  So I fixed 
that by making it conditional for just the open, which is also the first 
occurrence.

Since most of the customers did not have the problem in the first place, I 
resisted including this change in my public release of the product (for fear 
I would cause more problems than I solved.)  But, after updating that 
release to make some other changes, additional customers reported the 
problem, even though I did not change anything in that portion of the code. 
Again, the problem was fixed when I made the change discussed above.

So I think I now have my customers' problems solved, but I don't understand 
what the line I added did, and why it would be necessary for apparently 
random users (some but not all OS 8, 9, X), and why this function didn't 
cause a problem for those whose software was working correctly without it.

I'm sure someone on this group knows the answer (or at least where I could 
have found the answer myself.)

Thanks.

Scott Hochberg
Postage $aver Software
Low-cost Software for Preparing Postal Bulk Mail
www.savepostage.com