Expedition Navigation Software 
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I have a Panasonic CF-54 (home pc) and a CF-31 (boat pc) both running Expedition v 12.2.1. Optimal route seems to run fine on the CF-54 and on the CF-31 when I use the start time of NOW, but fails on the CF-31 when I run an optimal route with a future start date. Also, changing the start time on the CF-31 is now different - it uses a calendar wheel function vs just typing in the day and time like on the CF-54 and the previous versions of Expeditions that have run on the CF-31.
Any ideas? Here are the specs for the 2 machines - they are very similar and both run Win 10 pro - although something is obviously different. 
Thank you in advance for your help and for creating this software.
CF-54 Home computer
Processor          Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz   2.50 GHz
Installed RAM   16.0 GB (15.9 GB usable)
System type      64-bit operating system, x64-based processor
Pen and touch  Touch support with 10 touch points
Edition Windows 10 Pro
Version 22H2
Installed on       2/25/2022
OS build             19045.5487
Experience        Windows Feature Experience Pack 1000.19061.1000.0
 
Panasonic CF-31 - boat PC
Processor   Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz   2.30 GHz
Installed RAM     16.0 GB (15.9 GB usable)
System type 64-bit operating system, x64-based processor
Pen and touch     Single touch support
Edition     Windows 10 Pro
Version     22H2
Installed on      6/27/2020
OS build    19045.5487
Experience  Windows Feature Experience Pack 1000.19061.1000.0
 
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You probably have tablet mode selected on one of them.
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That was it - thank you for your quick response.