Unsuccessful TeXStudio upgrade

This morning, after its latest update, TexStudio does not work. I tried to reinstall it, but when I open it, the following message appears “No LaTeX distribution was found on your system. As a result, the corresponding commands are not configured. This means, that you cannot compile your documents to the desired output format (e.g. pdf)”. Do you know what is wrong, please! It seems that it doesn’t work due to a previous upgrade of the OS components. Please, could you help me?