Error Adding Document

[archiemr4]

....

I am a novice, but would need to evaluate how to use & implement LetoDMS.

I am able to install LetoDMS following the instruction from this instruction:

Installation with WampServer

as recently downloaded WampServer 2.2D and I used LetoDMS-3.0.0.

First problem I encountered is, I could not add any document.

the message is "an error has occured"

Here is the 20120405.log details:
2012/04/05 08:31 admin (127.0.0.1) op.Login
2012/04/05 08:31 admin (127.0.0.1) op.AddSubFolder?name=subfolder1&folderid=1
2012/04/05 08:31 admin (127.0.0.1) op.AddDocument UI::exitError error=An error has occured pagetitle=Folder 'subfolder1'
2012/04/05 08:40 admin (127.0.0.1) op.Login
2012/04/05 08:40 admin (127.0.0.1) op.AddDocument UI::exitError error=An error has occured pagetitle=Folder 'subfolder1'
2012/04/05 09:40 admin (127.0.0.1) op.AddDocument UI::exitError error=An error has occured pagetitle=Folder 'subfolder1'