Extension not appearing from the document settings

[#1]

Qlikview was configured by someone else and I did not see a structure like so:

C:\ProgramData\QlikTech\QlikViewServer\Extensions\Document\ to copy my extension folder.

Instead I created an alternate path from the Qlikview View Management Console like so :

D:\QlikStorage\QlikTech\QlikViewServer\Extensions.

and copied the extension to this folder .

But when I open the qlikview document in the server and select on extensions from the document setting ,it doesnot show me any extensions to include.

What am I doing wrong?

[#2]

I was able to use the extension and it worked wonderfully .... but now I am adding new sheets and their parent sheet and its giving me the following error. Do you know why?

[#3]

Thanks for the help guys. My syntax was wrong!.. Now working fine