I'm trying to type and can only get upper case. Microsoft Word is happy for me to type normally. But photoshop will only allow upper case. Caps lock on or off - makes no difference. I tried throwing out the settings file. More than once. No change. I'm on Windows 7. This is stopping my project in its tracks.
Choose Window > Character and unhighlight the TT which signifies all caps
Thank-you Norman Sanders! Solved.
Happy to help!