[WebMatrix] Problem with MSDE

[umberto]

Hello,

I have downloades WebMatrix/NET.Framework and it works well.
Unfortunatelly I have problem with connecting to MSDE.
I've installed the new version (sql2ksp3a) like they say:

setup.exe INSTANCENAME=my_inst_name DISABLENETWORKPROTOCOLS=0 SAPWD=my_pass
SECURITYMODE=SQL

The MSDE works ok (I can connect from a commercial programs - for example
'MSDE Manager') and seems to be ok.
But when I try to connect I get the error:
"Unable to connect to database, Invalid connection connection Open, Invalid
instancename".

I put all the parameters correct:
user: sa, auth.type: SQL, server: my_pc_name\my_instance_name


By the way the instance name and my PC name is the same. Could it be the
reason ?

Please help,
greetings to all