problems after the latest update lightroom

[Heidi5C1E]

After I Update my lightroom this weekend >I cant crop or change the horizont anymore .Can somebody help me ?

[dj_paige]

Please state your operating system version NUMBER.

[GoldingD]

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste  that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.