Crash when upgrading to High Sierra from older versions of MacWise

Upgrading to High Sierra with versions of MacWise prior to 16.2.3 could possibly cause abnormally large window sizes and a crash that corrupted the MacWise settings file.

It is unknown why this happens and it seems to be a problem on a low percentage of Macs.

Version 16.2.3 or later fixes this problem by detecting incorrect window sizes and sets them back to default sizes.

If possible, you should upgrade to MacWise 16.2.3 or later before installing Mac OS High Sierra or later to avoid the crash.

Function Keys and Arrow Keys with MacWise using Telnet and Kermit

MacOS High Sierra 10.13 removed telnet.
By default, MacWise version 16 now uses Kermit for telnet connections when it detects MacOS 10.13 or later.
It also enables two Kermit options by default:
"Use SLnet options for Kermit"  and "Echo Kermit Characters"

Not all host servers work properly with those two options.
If you are getting double characters on your screen, then uncheck "Echo Kermit Characters"

If your arrow keys and function keys do not work, then uncheck "Use SLnet options for Kermit"
Note that other factors can cause arrow keys and function keys not to work.

If you cannot log into your host, then put a checkmark on "Use SLnet options for Kermit"
You may see the following errors when opening a connection if it is unchecked:

Negotiations...

The Telnet server is not sending required responses

Telnet waiting for response to WILL KERMIT

Telnet waiting for response to DO KERMIT