I am having the same issues for optimizing routes. I get an error message with two bullets - wind forecast does not cover the area or time required; and - wind range filters do not allow routing to proceed. I have change the GFS to .05, reloaded the polars, made sure "Use port and starboard asymmetric polars" is not selected, and restarted the program. I get this error message when I try single and multiple optimal routing.