Hi! I previously used Lyx 2.3.7, which worked fine. After uninstalling that and installing 2.4.1, it doesn't work anymore. I have tried both the options "For everyone" and "Only for me" in the Lyx installer.
The Python directory should be correctly included in the system PATH, because I can run python from the command prompt without problems, as you can see here: $ C:\Users\TorquilSørensen\AppData\Local\Programs\LyX 2.4\bin>python Python 3.11.1 (tags/v3.11.1:a7a450f, Dec 6 2022, 19:58:39) [MSC v.1934 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> exit() However, when I run Lyx within the same command prompt, I'm getting the following: C:\Users\TorquilSørensen\AppData\Local\Programs\LyX 2.4\bin>Error returned from iconv EILSEQ An invalid multibyte sequence has been encountered in the input. When converting from UTF-8 to UCS-4LE. Input: 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xf8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4d 0x69 0x4b 0x54 0x65 0x58 0x5c 0x6d 0x69 0x6b 0x74 0x65 0x78 0x5c 0x62 0x69 0x6e 0x5c 0x78 0x36 0x34 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x62 0x69 0x6e 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x50 0x79 0x74 0x68 0x6f 0x6e 0x3b 0x43 0x3a 0x5c 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Error returned from iconv EILSEQ An invalid multibyte sequence has been encountered in the input. When converting from UTF-8 to UCS-4LE. Input: 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xf8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4d 0x69 0x4b 0x54 0x65 0x58 0x5c 0x6d 0x69 0x6b 0x74 0x65 0x78 0x5c 0x62 0x69 0x6e 0x5c 0x78 0x36 0x34 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x62 0x69 0x6e 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x50 0x79 0x74 0x68 0x6f 0x6e 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x50 0x79 0x74 0x68 0x6f 0x6e 0x5c 0x4c 0x69 0x62 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x50 0x79 0x74 0x68 0x6f 0x6e 0x5c 0x53 0x63 0x72 0x69 0x70 0x74 0x73 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x69 0x6d 0x61 0x67 0x65 0x6d 0x61 0x67 0x69 0x63 0x6b 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xc3 0xb8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x4c 0x79 0x58 0x20 0x32 0x2e 0x34 0x5c 0x67 0x68 0x6f 0x73 0x74 0x73 0x63 0x72 0x69 0x70 0x74 0x5c 0x62 0x69 0x6e 0x3b 0x43 0x3a 0x5c 0x55 0x73 0x65 0x72 0x73 0x5c 0x54 0x6f 0x72 0x71 0x75 0x69 0x6c 0x53 0xf8 0x72 0x65 0x6e 0x73 0x65 0x6e 0x5c 0x41 0x70 0x70 0x44 0x61 0x74 0x61 0x5c 0x4c 0x6f 0x63 0x61 0x6c 0x5c 0x50 0x72 0x6f 0x67 0x72 0x61 0x6d 0x73 0x5c 0x47 0x49 0x4d 0x50 0x20 0x32 0x5c 0x62 0x69 0x6e Manually looking for python in PATH ... Warning: No python v2.x or 3.x binary found. My Python installation is in the directory C:\WinPython\WPy64-31110 I'm using Miktex, which is installed in C:\Users\TorquilSørensen\AppData\Local\Programs\MiKTeX The same Miktex installation worked fine with Lyx 2.3.7. The system PATH is $ C:\Users\TorquilSørensen\AppData\Local\Programs\LyX 2.4\bin>echo %PATH% C:\Program Files\Microsoft MPI\Bin\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\dotnet\;C:\WinPython\WPy64-31110\python-3.11.1.amd64;C:\Users\TorquilSørensen\AppData\Local\Microsoft\WindowsApps;C:\Users\TorquilSørensen\AppData\Local\Programs\MiKTeX\miktex\bin\x64\; -- lyx-users mailing list lyx-users@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-users
