Web Development Client - applications don't start

Hi,
as it looks like more complicated matter I start new discussion. I have my web dev feature installed, my IE starts and I can see menu, etc but I can't start any application. I get "LOading" and it stays that way...

this is my jdbj DB section:

[JDBj-BOOTSTRAP DATA SOURCE]
name=System - 910
databaseType=O
server=(my DB server name)
serverPort=1521
database=jdevm
physicalDatabase=
owner=SY910
lob=true
unicode=true
databaseInstance=


[JDBj-SPEC DATA SOURCE]
name=Local - DV910
databaseType=E
server=localhost
serverPort=1521
database=E1Local
physicalDatabase=JDELocal_DV910
owner=dbo
lob=false
unicode=true
databaseInstance=
user=sa
password=