Diagnosis: You have a photo in the system that is too big to make a thumbnail from.
Try one of the following to get rid of the errormsg:
Try to edit the album (click 'Edit' in the albumtable) and delete the photos that do not display a thumbnail. This will delete the full size and the database entry
Go to the upload page and upload one photo that you are sure of that it is not too big. This will automaticly do the same as the above, IF the problem is in the most recently used album.
If both methods fail (which i doubt) do the following:
FTP to wp-content/uploads/wppa/thumbs and find out what entries exist.
Then go one up and see waht entries you have MORE than in the thumbs dir.
Delete those (full-size) images.
Do upload one photo to the album that caused the problem, this will fix the database as in the very first fix suggestion.
The alignment problem you have:
Normaly the width of your display column (in your case i guess 870 pixels) is the same as the full image size.
So, Do one of the following:
Resize your photos to 500 pixels before uploading and set full image size to 870 and uncheck Stretch.
set %%size=870%% as the last token in (p.e.) %%wppa%% %%album=13%% %%size=870%% and uncheck Stretch as above.
Also in either case set vertical alignment to 'fit'. (If vertical alignment is off, also no horizontal placement is done)
Play with all the settings i mentiond here so you get a feeling on how to..
Because of the fading effect used in slideshow and browse full image the photo displayd is on a top level (z-value very high). Therefor it is always on to, even over a menu.
By the way:
Upload or import with 'Resize on upload' ON will NEVER enlarge, will only make pictures smaller.
Pls tell me how you fixed it.