upgrade from 1.90 to 2.40

START with the 2.o upgrade script first.

In SQL MMS

select your database store>

Right Click>

Add NEW query >

Copy and paste the Update Script 2.0 ( then next version SCRIPT) ETC. from nop

Can't open it? Use notepad to open the file and just paste inside new query.

Then hit execute !!!!! the red icon

now repeat over and over each time until your up to 2.4.

THEN add your website back.

You are only updating the database.

does this help?

What happens if you don't have a SQL MMS tool?

http://www.microsoft.com/download/en/details.aspx?id=7593

Its free.

You'll need this for sure.

if you want to try SQL or use the free version

http://www.microsoft.com/sqlserver/en/us/editions/express.aspx

I don't know about 2012 yet.. I'll wait after horrible windows 8 just horrible.