after update cannot access files

updated to new libre office this morning and after restarting computer cannot access any linre office files

Could you please give a minimum of information. You don’t tell us your operating system, which LibreOffice version you updated to and from. No information how your are trying to open files (Click on a thumnail in LibreOffice’s recent document list panel, click on a file in your file manager, using menu File -> Open). You don’t even tell us whether LibreOffice does start at all after your update. How do you expect to get any serious hint without providing any of these essential information? Please read

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What kind of OS? Which errors do you have? How do you open your files?