I have PowerDirector 17 Ultra purchased from the Microsoft Store. For several years it worked fine with the occasional errors but nothing major. However, for the past few weeks I simply can't use the software anymore. No matter what media file I try to import, I almost always get the same error messages.

Firstly, when I import and mp4 file, I always immediately get the "Shadow File is unavailable because it is broken" error message. I deleted every shadow file manually from the General Preferences menu but it didn't help.

Secondly, no matter which file I'd like to edit, PD 17 pops up the "Media Source error" panel (Error code: 2), and I basically cannot do anything with the file. I saved one of the error logs, but I don't know if it tells anything useful.

Media Source Error Report :
Error type : Video cut
Material type : Video
Error information : Unknown
Material filename : C:\filename.mp4
Detailed information : hr = 0x80040217, at ..\CES_Source\Src\CES_Engine\CES_MediaLoader.CPP:4303
Source filter GUID : E436EBB5-524F-11CE-9F53-0020AF0BA770
Splitter filter GUID : A05CDF6C-287E-47A1-A407-A477A8A5FDCA
Video decoder filter GUID : 8A0836E9-6E48-454D-8F68-507BC13F3D0B
Video hardware decoder filter GUID : 8A0836E9-6E48-454D-8F68-507BC13F3D0B

I tried looking up this error and it might be caused that some codecs are, for some reason, missing from my computer? But the software worked flawlessly before so I'm not sure what could cause this. This error happens basically with every single mp4 file I'm trying to import now, so PD 17 has become practically unusable.

I hugely appreciate any help.