help inserting pages from an attachment

I have a pdf that depending on user input inserts various different pages. At the moment I have all the files that are used to insert pages contained in the same folder as the original pdf and this works, however I dont want to have to accompany my pdf with an additional folder of files when I give it to other users. What I instead would like to do is attach all the extra files to the orginal pdf, however I am having trouble getting this to work.

I am able to open the attachments using:

var attachedFile = app.openDoc("|" + this.path + "|U:attached filename.pdf")

but it will not allow me to use the same path with insertPages ie:

myTrustedInsertPagesFunction(oDoc,nPage,"|" + this.path + "|U:attached filename.pdf")

also tried

myTrustedInsertPagesFunction(oDoc,nPage,attachedFile.path)

this gives me the following error

RaiseError: A file error has occurred.
Doc.insertPages:30:Console undefined:Exec
===> A file error has occurred.

anhy help or alternative methods of achieving the same result would be appreciated.