Problem with SecurityContext in Ecxel configuration

[NonLinearThoughts]

I have this code in Excel configuration in a report when I have Excel as "Report Format":
Report report = Model;
string repositoryPath = report.SecurityContext.Security.Repository.RepositoryPath;
I use this code to get the path to the Repository folder. When I try to run the report using Seal web UI I don't have problem. But when I use to run the report as attachment to email or as output to folder device then I have an error "Object reference not set to an instance of an object.". I am sure that the error comes from the second line because when I remove it the error disappears.
I guess it's a security issue. But how can I get around it?

[ariacom]

yes SecurityContxt object is just set when executed from Web, to get the repository path, just use
report.Repository.RepositoryPath;

[NonLinearThoughts]

Thank you. BTW I also tried to set the user name that I logon in the web ui in the output as the seal site suggested. When I tried it to output folder device it was ok. But when I tried it to SMTP device not.