Yes, your options include:
Disable Session Saver (Preferences > K-Meleon Plugins)
or
use the .cleanShutdown preference to disable the alert
or
remove loader.exe from startup.
Quote
siria
To only stop that annyoing crash alert:
add a special line to your config as a workaround to suppress that alert box (even if it really crashed last time),
or manually close the browser each time before shutting down the system (bothersome),
or disable the sessions plugin (F2/KM-Plugins) (but then your previous sessions are never remembered)
Quote
siria
Open browser, click Edit > Configuration > User Settings
Add this as last line and save:
user_pref("kmeleon.plugins.sessions.cleanShutdown", true);
See
http://kmeleonbrowser.org/forum/read.php?3,118897