(That is a capital "O") This might point you in the right direction. If not, and you are able to see the errors, post them back here if you don't understand them.
I'm trying to install the No-Source version 2.30 and did edit the permissions like the Nopcommerce userguide recommended and some of the tips from here.
Is the part "HostingSpaces" coming from my Hosting Provider or is it from the Nopcommerce script?
•The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\App_Data'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\bin'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\content'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\content\images'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\content\images\thumbs'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\content\files\exportimport'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\plugins'. Please configure these permissions. •The 'NT AUTHORITY\NETWORK SERVICE' account is not granted with Modify permission on folder 'C:\HostingSpaces\user\MySite.nl\wwwroot\plugins\bin'. Please configure these permissions
if you are using Arvixe, simply go to control panel-> websites -> (your website name) -> home tab , just enable the check box: "Enable Write Permissions"