Trouble Opening PNGs - Unknown file type

I found this topic already on this board (a post from 2002)
but there was no usable answer.
I am using Fireworks 8 (8.0.0.777) on Windows. I have
troubles opening old pngs I created. When opening some files I get
the error message "unknown file type".
The file can be opened via photoshop or irfanview, but all
data is flat on only one layer - so this is not a solution.
It seems that the file is damaged - rebuilding the whole file
would be a lot of work. This problems occurs from time to time with
different pngs.
All files are saved on a server via our network. But this
problem occurs only with pngs and no other file-types, so I don't
think that this is a network problem.
Thanks in advance, Malte

The AD wrote:
> I'm having the same issue, saving to a network drive.
File I open, save, close
> and try to re open some times (seems random) I get the
"unknown file type. I'm
> on a mac running 10.5.2 other in my office can't opent
he files either, they
> are running vista.
>
> No other ops can open the PNGs either.
Have the files been moved?
Linda Rathgeber [PVII] *Adobe Community Expert-Fireworks*
http://www.projectseven.com
Fireworks Newsgroup:
news://forums.projectseven.com/fireworks/
CSS Newsgroup: news://forums.projectseven.com/css/
http://www.adobe.com/communities/experts/

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