Hello,
Please try this to understand :
1. Go to the Telerik demo here :
http://demos.telerik.com/aspnet-ajax/fileexplorer/examples/server-sideapi/initialpathandpaging/defaultcs.aspx
2. "All Images" folder is selected by default. Increase the slider to show the last page (the third).
3. Change folder and come back to previous "All Images"
=> You can see that last page is always shown but slider index is 1 (instead of 3)...
How to fix it please ?