This was an updater bug with Xingla Pro 2 and some Windows configurations.

The quickest solution is to open your ‘C:Program FilesKeiferSoftXingla Pro’ folder, then right click over the ‘XinglaPro.exe’ file and select ‘Rename’. Rename it to ‘Setup.exe’. Now double click the ‘Setup.exe’ file to run the setup program. This time it will install properly.

This is not an issue with Xingla Pro 3. Xingla Pro 3 has a totally new and reliable auto updater function.