Locals and Expressions window is blank

[BasicPoke]

Hello, my Locals and Expressions window has stopped working and is blank. I have read that I should download gdb but I can't find that. What should I do? Would downloading the latest Qt help?

Here is my pro file:
@QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = GaugeMon
TEMPLATE = app

SOURCES += main.cpp
GaugeMon.cpp

HEADERS +=
../DAQ_C/cbw.h
GaugeMon.h

FORMS +=
GaugeMon.ui

OTHER_FILES +=

#---Following added when DAQ library was added---
#win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../DAQ_C/ -lcbw32
#else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../DAQ_C/ -lcbw32d
LIBS += -L$$PWD/../../DAQ_C/ -lcbw32

INCLUDEPATH += $$PWD/../../DAQ_C
DEPENDPATH += $$PWD/../../DAQ_C
@

The only thing that looks odd in my debug log is this:
@>&"Python Exception <type 'exceptions.UnicodeEncodeError'> 'ascii' codec can't encode character u'\xff' in position 867: ordinal not in range(128): \n"

&"Error occurred in Python command: 'ascii' codec can't encode character u'\xff' in position 867: ordinal not in range(128)\n"
3473^error,msg="Error occurred in Python command: 'ascii' codec can't encode character u'\\xff' in position 867: ordinal not in range(128)"
dDUMPER FAILED: 3473^error,data={msg="Error occurred in Python command: 'ascii' codec can't encode character u'\\xff' in position 867: ordinal not in range(128)"}
@

Any ideas? Thanks.
Ron

[BasicPoke]

It started working again today for no apparent reason.
Ron

[BasicPoke]

Ok, my Locals and Expressions window is sometimes blank, and occasionally works. Really annoying. Any ideas?
Thanks
Ron

[SGaist]

Hi,

Got any non-ascii char in your code/data ?

[BasicPoke]

I don't believe there are any odd characters. Don't even have any C strings. Now I am losing debug info exactly when I need it, very frustrating. I have a breakpoint in a function, I stop there, step a few times (Locals and Expressions is working correctly), then add another breakpoint, click continue, then it stops at the new breakpoint. When I start stepping, the Locals and Expressions window all goes gray and values are no longer updated. The values are also wrong when I hover over a variable.

With the L&E window closed, then values when I hover are grayed out and incorrect.

I have restarted Qt Creator, powered down & rebooted. Any ideas?
Thanks
Ron

[SGaist]

What OS and Qt Creator versions are you running ?

[BasicPoke]

Windows 7 64-bit, and I believe that was Qt Creator 3.1.0 and Qt 5.2.1. I installed Qt Creator "3.2.1 (opensource)" and the problem has gone away for now. I may be back later. Thanks for your help.
Ron