Terminal Service Plus

i published firefox with tspluss v.8.50 .work good for only first user and seaseon .for second sessions show this massage "a version of firefox is open do you want to close it " when push the close button .close the first sessions firefoxe.
how to solve it .........

Hello,

v.8.50 is about two years old version and already pretty outdated. Upgrade it and report issues only if you experience it on latest patch.