Error upon Assignment creation in Project Activity

When I add an Assignment in an Activity within a Project and attempt to save, I get a "Cannot get IIS pickup directory" error: -<SOAP-ENV:Envelope> -<SOAP-ENV:Body> -<SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode> <faultstring>Cannot get IIS pickup directory.</faultstring> -<detail> <af:legacy_detail>Cannot get IIS pickup directory.</af:legacy_detail> <af:exception message =" Cannot get IIS pickup directory. " type=" Aras.Server.Core.InnovatorServerException " /> </detail> </SOAP-ENV:Fault> </SOAP-ENV:Body> </SOAP-ENV:Envelope> I haven't been able to figure out where this error is coming from or why it's occurring. On a side note, when I try to add a User that doesn't have an email attached to it, I get an error: -<SOAP-ENV:Envelope> -<SOAP-ENV:Body> -<SOAP-ENV:Fault> <faultcode>SOAP-ENV:Server</faultcode> <faultstring>Email address for to_identity not found or invalid</faultstring> -<detail> <af:legacy_detail>Email address for to_identity not found or invalid</af:legacy_detail> <af:exception message =" Email address for to_identity not found or invalid " type ="Aras.Server.Core.InnovatorServerException " /> </detail> </SOAP-ENV:Fault> </SOAP-ENV:Body> </SOAP-ENV:Envelope> Note that I don't have any email messages setup for Projects, so I can't figure out why it won't let me add a user without an email. I'm not sure whether these two errors are related, but does anyone have an idea as to why there is an issue? Am I missing some configuration step somewhere? Thanks,