Starting application on N900 causes reboot of device

Trying to start an application with Maemo target simply causes the device to reboot. This happens after the deployment step has finished and it tries to launch the application.

Compilation output is:
Running build steps for project beater...
Configuration unchanged, skipping qmake step.
Starting: "C:\nokiaqtsdk\maemo\4.6.2\bin\make.exe" -w
make: Entering directory `/c/dev/beater'
make: Nothing to be done for `first'.
make: Leaving directory `/c/dev/beater'
The process "C:\nokiaqtsdk\maemo\4.6.2\bin\make.exe" exited normally.
Creating package file ...
Package Creation: Running command 'dpkg-buildpackage -nc -uc -us'.
dpkg-buildpackage: set CFLAGS to default value: -g -O2
dpkg-buildpackage: set FFLAGS to default value: -g -O2
dpkg-buildpackage: set CPPFLAGS to default value:
dpkg-buildpackage: set LDFLAGS to default value:
dpkg-buildpackage: set CXXFLAGS to default value: -g -O2
which: pgp: unknown command
dpkg-buildpackage: source package beater
dpkg-buildpackage: source version 0.0.1
dpkg-buildpackage: source changed by unknown <>
dpkg-buildpackage: host architecture armel
debian/rules build
dh_testdir

1. Add here commands to configure the package.
   touch configure-stamp
   dh_testdir
2. Add here commands to compile the package.
   /bin/make
   make[1]: Entering directory `/c/dev/beater'
   make[1]: Nothing to be done for `first'.
   make[1]: Leaving directory `/c/dev/beater'
   #docbook-to-man debian/beater.sgml > beater.1
   touch build-stamp
   dh_testdir
   debian/rules binary
   dh_testroot
   dh_clean -k
   dh_installdirs
3. Add here commands to install the package into debian/beater.
   /bin/make INSTALL_ROOT="/c/dev/beater"/debian/beater install
   make[1]: Entering directory `/c/dev/beater'
   install -m 755 -p "beater" "/c/dev/beater/debian/beater/opt/usr/bin/beater"
   install -m 644 -p c:/dev/beater/beater.desktop /c/dev/beater/debian/beater/usr/share/applications/hildon/
   make[1]: Leaving directory `/c/dev/beater'
   dh_testdir
   dh_testroot
   dh_installchangelogs
   dh_installdocs
   dh_installexamples
   dh_installman
   dh_link
   dh_strip
   dh_compress
   dh_fixperms
   dh_installdeb
   dh_shlibdeps
   dh_gencontrol
   c:\nokiaqtsdk\maemo\4.6.2\madbin\dpkg-shlibdeps: warning: dependency on libpthread.so.0 could be avoided if "debian/beater/opt/usr/bin/beater" were not uselessly linked against it (they use none of its symbols).
   dh_md5sums
   c:\nokiaqtsdk\maemo\4.6.2\madbin\dpkg-gencontrol: warning: unknown substitution variable ${misc:Depends}
   dh_builddeb
   a - debian-binary
   a - control.tar.gz
   a - data.tar.gz
   c:\nokiaqtsdk\maemo\4.6.2\targets\fremantle-1030\bin\ar.exe: creating ../beater_0.0.1_armel.deb
   dpkg-genchanges -b >../beater_0.0.1_armel.changes
   dpkg-genchanges: binary-only upload - not including any source code
   dpkg-buildpackage: binary only upload (no source included)
   Package created.
   Installing package to sysroot ...
   Installation to sysroot failed, continuing anyway.
   Connecting to device...
   Unmounting remote mount points...
   Finished unmounting.
   Unmounting remote mount points...
   Finished unmounting.
   Setting up SFTP connection...
   Uploading UTFS client...
   Starting remote UTFS clients...
   Starting UTFS servers...
   Installing package to device...
   (Reading database ...
   59310 files and directories currently installed.)
   Preparing to replace beater 0.0.1 (using .../beater_0.0.1_armel.deb) ...
   Unpacking replacement beater ...
   Setting up beater (0.0.1) ...
   Package installed.
   Unmounting remote mount points...
   utfs server is ready
   Finished unmounting.
   Deployment finished.

The application output:
Killing remote process(es)...
Could not connect to host: The remote host closed the connection