I was using 8.5.2 with 8.5.2.201109131928NTF ExtLib version for this db (in screenshot)

We upgraded Client & Domino to 8.5.3.

Then installed ExtLib 853-20111117-1058 on Client & Domino Server.

Opened db in designer.

I got 1 problem. Changed rows property to rowCount which is about View Paging Control.

Then previewed in Internet Explorer 8.

First open;

"Could not load extlib.dijit.Menu"

"XSP is undefined"

"Could not load extlib.dijit.Menu" -> I used Container Node (Menu) in Place Bar (at Right Corner).

"XSP is undefined" -> I don't know why it is not loaded.

After this situation;

1- I created new empty NTF database on 8.5.3 Client.

2- Then copied all design elements one by one from old database to new one.

3- Then replaced original database with NTF.

4- Solved !

1- I created new empty NSF database on 8.5.3 Client.

2- Then copied all design elements one by one from old database to new one.

3- Solved !

I clean browser cache on exit everytime. (Related property is selected in internet explorer, as you know)

I cleaned and re-built database before new copy solutions. Failed ! 

Our all xpages-based databases had this problem after upgrade. (created on 8.5.2 and used 8.5.2 extlibs, then upgrade to 8.5.3 and 8.5.3 extlib.)

I hope It can help.

Thanks

Ferhat

www.bestcoder.net