I tried out 4.6 and 4.7 of IDE ( on my 6.4.1 development PC).
My target is QNX6.3.2 an I run the latest qconn.

I connect to my target and change to the system information perspective.
Now I select a process on the left tab and click on Process Information in the right tab.
-> the IDE shows some information and then a error popup comes up, telling me something of Java NULL pointers ( see 
attached screenshot ).
After this, I cannot reconnect to the target anymore, even when reopening the IDE.
I telnet into the target and start qconn manually, but this doesn't seem to work
because it is telling me ☺q☺c☺o☺n☺n

I assembled a screenshot showing all the details.

Hope this information is usefull for you.
regards
Stefan