Is this issue/problem common with svManager?
No, not to my knowledge. I think I see what the problem is but I don't know how you got there! Maybe you can work it out.
The xml file containing the gallery settings is here: http://www.centerlinephotography.net/ga … allery.xml
Here's an extract from the simpleviewer tag at the top of the file:
...lots of other settings and then...
thumbnailColumns="1" thumbnailRows="1" ...
Now thumbnailColumns and thumbnailRows were the correct settings for Simpleviewer 1. When SimpleViewer 2 was released (some time ago now) the names changed to thumbRows and thumbColumns but the old settings were still supported.
So it looks like some old SimpleViewer 1 settings are overriding the newer SimpleViewer 2 settings provided by svManager.
If you can edit this file manually and remove the thumbnailColumns and thumbnailRows settings then it should work.
But since I don't know how you got there, I don't know what advice to give to stop it happening again.
Hope all this isn't too confusing – it confused me!
SimpleViewer Support Team.