If I enter "9999.99", the TurboTax autocorrect to "9.999,99" and then pop up the window with the error message. I already log out / log in, checked for the updates. The only workaround to move on was to edit by the Forms view, then click on the top right "view summary" and then click on the next page I would like to go on the left panel using the EasyStep. Is it related to the source language of Windows? If so, I already change the configuration on Windows to use always decimal points as "9999.99", but even so it didn't fix the problem.
