photoshop9 cannot read some tif files

[rainer_v]

it happened several times in the last days, that i tried to open tifs, which before have been saved with photoshop cs2 , or copied with bridge,- and that ps displays the message that it cant open the files, because tehre is some missing of end of file.
with lightroom or in apple preview i can open these tif files, save them again without any changes and than ps will open them.
this happens too often now on two different harddrives.... so a writing error of the HD hardly cannt be the reason.
what idea do you have abot that?

[digitaldog]

Could certainly be an issue with your copy of Photoshop not writing the data correctly IF you can open them in other applications. It could also be the sign of a ram issue but I'd suspect the other app's would follow suite when saving.

[rainer_v]

now i found the reason:
if i allow lightroom to write changes into XMP data the tif files are updated each time i change anything in lightroom. this leads fast to the error that some files cannot opened anymore in ps, but still in lr.
if i turn of the XMP feature everything runs as allways. dangerous to use it..... cause although i can restore the tif data, the layers are lost. lr allways mix them down.