Due to specifics of MSI installer behavior on Windows 95 / 98 / Me, Command line email adds / modify following line to autoexec.bat which causes the problem with spaces in folder names:
SET PATH=C:\Program Files\Febooti Command line email\;%PATH%
To fix the problem, simply locate the line in autoexec.bat, add double quotes to Command line email path:
SET PATH="C:\Program Files\Febooti Command line email\";%PATH%
Restart your computer and problem should be fixed.
Note, that quotes are not necessary if during installation short path (8.3) is specified.
Please do not hesitate to contact our support department with any possible further questions or to solve practical issues connected with Command line email. The solution will be provided shortly by e-mail and eventually added to FAQ.