Cannot read creator env file /tmp/qt_temp.ps1447: No such file or directory

I have this error message in "konsole" from KDE when I run my projects:
Cannot read creator env file /tmp/qt_temp.ps1447: No such file or directory

I configured konsole command as following:
konsole --nofork -e

Strange thing is that sometimes it works, but like 80% of the times it has this error.

When I reset to xterm everything works fine, although in 2.6.2 the "konsole" still works just fine. Only 2.7.0 has this problem.