Can you try running command su -c' apt-get install libjpeg-dev' in terminal. Let us know if the libjpeg-dev package was found and installed.
If it returned no package found. Please provide us the output of 'apt-cache search libjpeg'
Can you try running command su -c' apt-get install libjpeg-dev' in terminal. Let us know if the libjpeg-dev package was found and installed.
If it returned no package found. Please provide us the output of 'apt-cache search libjpeg'