./bin/../lib/fingerpoken/xdo.rb:59:in xdo_get_window_size': no implicit conversion from nil to integer (TypeError) from ./bin/../lib/fingerpoken/xdo.rb:59:ininitialize'
from bin/fingerpoken.rb:72:in new' from bin/fingerpoken.rb:72:inmain'
from bin/fingerpoken.rb:70:in each' from bin/fingerpoken.rb:70:inmain'
from /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in call' from /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:inrun_machine'
from /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in run' from bin/fingerpoken.rb:66:inmain'
from bin/fingerpoken.rb:94
./bin/../lib/fingerpoken/xdo.rb:59:in
xdo_get_window_size': no implicit conversion from nil to integer (TypeError) from ./bin/../lib/fingerpoken/xdo.rb:59:in
initialize' from bin/fingerpoken.rb:72:innew' from bin/fingerpoken.rb:72:in
main' from bin/fingerpoken.rb:70:ineach' from bin/fingerpoken.rb:70:in
main' from /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:incall' from /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in
run_machine' from /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:inrun' from bin/fingerpoken.rb:66:in
main' from bin/fingerpoken.rb:94It seems that @rootwin might be nil