Check the blcli.log file in
$HOME/.bladelogic (unix / linux) or $USERPROFILE/application data/BladeLogic (Windows)
In that directory, you can also edit the .cf file to increase the logging level of blcli.
If that does not help, call support.
In linux / unix can edit the blcli script, or pass an option to blcli2.exe in Windows.
java -Xmx256m ...
blcli2.exe -Xmx256m Server listAllServers
Awesome. Thanks Andrew!