(I´m sorry by my English mistakes)
I needed to reinstall the Miktex.
I had many others beamers themes, like
progressbar, but can´t use these themes anymore because Miktek doesn't recognize these packages, even using Miktex Console Administrator, Tasks, refresh file name database....
I already put these themes in
C:\Program Files\MiKTeX 2.9\tex\latex\beamer
I don't know how to fix it. I'm using a new miktex, texstudio and windows 10.
Here are some problems
("C:\Program Files\MiKTeX 2.9\tex/latex/beamer\beamerbasethemes.sty")) ("C:\Program Files\MiKTeX 2.9\tex/latex/beamer\beamerthemedefault.sty" ("C:\Program Files\MiKTeX 2.9\tex/latex/beamer\beamerfontthemedefault.sty") ("C:\Program Files\MiKTeX 2.9\tex/latex/beamer\beamercolorthemedefault.sty") ("C:\Program Files\MiKTeX 2.9\tex/latex/beamer\beamerinnerthemedefault.sty") ("C:\Program Files\MiKTeX 2.9\tex/latex/beamer\beamerouterthemedefault.sty"))) ! LaTeX Error: File `beamerthemeprogressbar.sty' not found. Type X to quit or <RETURN> to proceed, or enter new name. (Default extension: sty) Enter file name: Process has been terminated ...