Hi!
I'm using XnView 1.95.4. I've found such strange thing while using Change timestamp Tool.
When I tried to apply "Change timestamp"" procedure approximately to 1000 photos, it turned out that the only first (~300) imgs were affected. The other remained unchanged. After the process of changing timestamp has stopped, I couldn't open EXIF tab in Properties window (there was no such tab till the viewer has been restarted). Later, that was a signal for me that not all imgs have been proceeded. To find a way out, I've used "Change timestamp" on smaller groups of photos. 300 was found as a most convinient amount.
Such behaviour has been observed several times.
PS> The viewer is brilliant, thank you ^^
Changing timestamps for big amount of images
Moderators: helmut, XnTriq, xnview
Re: Changing timestamps for big amount of images
A limit was fixed in more recent version.