Nope. I wished to confirm it surely did not throw an error in Qlikview 11. I remember mistakenly placing the mapping table after the load statement which called it, and thinking why isn't it working and neither throwing an error. Wondering if this change happened in later SRs of QV11 or with QV12. Nevertheless, a welcome change to the function.
in the Release notes for QlikView 12.10 (initial release) it says:
Changed error handling when mapping tables
You can find it on page 4, section "Other Changes Included in this release" -> "Changed behaviour in QlikView 12.10 scripts".
Previously, unsucccessful ApplyMap statements would be ignored and the reload would complete successfully. The new behaviour will let users know if the script is failing to apply a map as it was expected from the script.