Y-position fix crashing
Y-position fix crashing

The y-position fix submitted by Søren Enemark is causing crashes in some of my
code (index exceeds matrix dimensions).  Don't have tme to sort this out right
now, so I'm just wrapping the code in a try-catch block.

kakearney/ecopathlite-pkg,kakearney/ecopathlite_2-pkg,kakearney/ecopathensemble-pkg,kakearney/ecosystem-pkg