Thanks Rod! I tried reverting back to Qt Mobility 1.0.0 on the device as a 
quick test and I'm not seeing the error anymore.

Aaron Tunney, Accenture


From: Roderick Burns [mailto:[email protected]]
Sent: 07 July 2010 10:40
To: Tunney, Aaron
Cc: [email protected]
Subject: Re: [Qt-mobility-feedback] 'General OS-related error' when using 
location APIs on Symbian

Hi Aaron,
I believe this bug is the problem 
http://bugreports.qt.nokia.com/browse/QTMOBILITY-360
Rod.
On 7 July 2010 10:32, 
<[email protected]<mailto:[email protected]>> wrote:
Hi,

I have a problem with the Qt Mobility location APIs on Symbian and was 
wondering if anyone could help me.

I have written an application that takes advantage of Qt Mobility. Following 
the Qt Mobility quick start example, I can successfully check for the presence 
of location sensor using QSystemInfo (part of systeminfo). On the N97, this 
returns true.

However, as soon as I make a call to one of the location APIs, I start seeing 
errors. I've tried to copy the example from 
http://doc.qt.nokia.com/qtmobility-1.0-tp/location-overview.html#requesting-location-data-from-data-sources
 . The code compiles fine but I see an error when trying to run the code on the 
device from the IDE. I only need to include the first line of the constructor 
(QGeoPositionInfoSource *source...) in the example to see the problem. The 
error is:

Executable file: 12052 2010-07-06T16:32:37 
V:\\epoc32\release\armv5\udeb\gps_app.exe
Package: 26468 2010-07-07T09:57:29 V:\Projects\gps_app\gps_app.sis
Deploying application to 'Nokia N97 USB (COM4)'...
Copying install file...
Installing application...
Starting application...
Could not start application: General OS-related error
Finished.

I tried putting a QDebug statement at the start of my main() function but it 
isn't hit.

My first thought was that the capabilities of my executable were wrong. 
However, my application definitely includes Location as one of its capabilities 
(as well as the other user capabilities). Also, I would expect the process to 
fail at the installation phase rather than the run phase if it was a capability 
problem.

I also checked to see whether I definitely had Qt and Qt Mobility installed on 
the device and I definitely do have them both installed.


My environment is as follows:

 - Qt 4.7.0 beta1 (from binaries)
 - Qt Mobility 1.0.1 (from binaries)
 - Nokia N97 (S60 5th edition) SDK
 - Qt Creator 2.0 (reported as 1.3.83 in the About dialog)


Any ideas what's wrong?

Thanks!

Aaron Tunney, Accenture


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