Delegating access to iApps

I've set up a few applications using iApp templates as an account with Administrator rights, but when I try and get someone with Manager access to change them, when they go to the Reconfigure tab they just get this error.

Error parsing template:Tcl_Init failed: (invalid command name "file" while executing "file join $i init.tcl" (procedure "tclInit" line 21) invoked from within "tclInit" line:46)

They also get this error if they try and create a new application from an iApp template when they select the template from the dropdown.

I'm fairly new to F5s, so is it possible for a non-Administrator to change these iApps, or have I messed something else up?

Thanks