P: Error Handling file export with invalid settings

[WhyEconWhy]

When entering invalid export image settings, no usefull error message is produced:

1. Settings (note the resolution which is not within the acceptable range):

2. Error message:

This is extremely unfortunate, as i had unintentionally changed this setting and spent hours with the support team trying to find the issue. I think it would be very easy for the dev. team to implement an error message if invalid settings are set. We were on a wild goose chase, resetting lightroom, creating new profiles, using a different windows account, until the idea struck us that maybe it was just wrong settings all allong... 

Easy fix that could save the Adobe Team huge amounts of time troubleshooting such issues!

[johnrellis]

A little testing shows that the maximum value you can enter for that field, without getting "unknown error", is 65,535 (2^16 - 1).

I'm sure that the original LR product manager would not consider this behavior as-designed (i.e. a "bug") -- it's elementary product design to check all user inputs to the extent practical.  But lately the engineering team has been taking a very cramped view of what constitutes as-designed behavior (more akin to as-coded).   So I think you're feedback could languish here in the Ideas section.