Fcsvr_client getmd works in Terminal, not from Response

Question

I've written a script that grabs the contents of a metadata lookup named PAENUM_CUSTCLIENTS and does some stuff with it. I get the contents just fine if I run the script from the command line, but I get absolutely nothing when running with a Subscription in FCS.
The full command I'm executing:
/Library/Application\ Support/Final\ Cut\ Server/Final\ Cut\ Server.bundle/Contents/MacOS/fcsvrclivrclient getmd /enum/PAENUM_CUSTCLIENTS
Run from the command line, my "clients" variable is 746 bytes long.
Run from within FCS, my "clients" variable is 0 bytes long.
I've tried piping the output of the command into a file instead of reading directly, but the file is empty. I'm thinking it's a shell problem, but I'm not sure. I am using Perl.
Later in the script, I use "fcsvrclivrclient setmd", which works fine. Anything that outputs seems to not be readable, i.e., list_groups is also empty.
Any help is much appreciated!
Neil

Answer 1

I have a pretty thorough Perl script to do this work. Here's the basic flow:
• From FCS, I send the Asset ID, Device, and Location (file path).
• Based on the path, I extract some keywords
• One of these keywords is CLIENT, which is actually an ENUM in FCS
• Because it's an ENUM, I verify that the CLIENT keyword based on the path is in the ENUM before setting it
• I set all the keywords for the asset at the end
So what breaks down is getting the ENUM content when executing from FCS even though that works fine running directly from the Terminal.
Here's the lines in the script where I setup the command to get the CLIENTS ENUM:
my $fcsvrClientCommand = "/Library/Application\ Support/Final\ Cut\ Server/Final\ Cut\ Server.bundle/Contents/MacOS/fcsvr_client";
my $clientFetchCommand = "\"$fcsvrClientCommand\" getmd /enum/PAENUM_CUSTCLIENTS | /usr/bin/grep ENUM_ENTRIES";
my $clients = `$clientFetchCommand`;
Any other insights would be awesome! Sorry for not posting for so long, but we actually moved our offices over the last two months and that swallowed all my time. Let me know if there is something else I can post to help.