Error: Could not find or load main class net.minecraft.client.main.Main

[RiverRyan3000]

when i run

portablemc --main-dir files --work-dir files start 1.16.5

it passes

[  OK  ] Loaded version 1.16.5
[  OK  ] Loaded Mojang java 8u51
[  OK  ] Checked version jar
[  OK  ] Checked 2615 assets version 1.16
[  OK  ] Checked 33 class and 8 native libraries
[  OK  ] Using logger client-1.12

Error: Could not find or load main class net.minecraft.client.main.Main

i tried running it in administrator but it didnt work

[mindstorm38]

I think the problem come from the launcher... Can you try with the full path just to check?

For the nerds: I think that the pwd given to the java process cause all relative paths to be resolved from it, so no jar file can be resolved.

[mindstorm38]

We're good for a 4.0.2 patch, thank you!

[RiverRyan3000]

i tried with the full path and its still the same error

portablemc --main-dir C:\luncher_tests\files --work-dir C:\luncher_tests\files start 1.16.5

and i also tried just starting it, without the --main-dir and --work-dir

portablemc start 1.16.5

and its still passing the same error

[mindstorm38]

Could you try with portablemc -vv start 1.16.5, and give us the full command line?

[mindstorm38]

At first glance, it looks like #170

[RiverRyan3000]

[  OK  ] Loaded version 1.16.5
[  OK  ] Loaded Mojang java 8u51
[  OK  ] Checked version jar
[  OK  ] Checked 2615 assets version 1.16
[  OK  ] Checked 33 class and 8 native libraries
[  OK  ] Using logger client-1.12
[ INFO ] Applied the following fixes:
         Fixed authlib for 1.16.4 or 1.16.5: True

C:\Users\river\AppData\Roaming\.minecraft\jvm\jre-legacy\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Dos.name=Windows 10 -Dos.version=10.0 -Djava.library.path=C:\Users\river\AppData\Roaming\.minecraft\bin\d5977bd7-0ed6-4054-8577-f622f66485fc -Dminecraft.launcher.brand=portablemc -Dminecraft.launcher.version=4.0.1 -cp C:\Users\river\AppData\Roaming\.minecraft\libraries\com\mojang\patchy\1.3.9\patchy-1.3.9.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\4.4.0\jna-4.4.0.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j\66.1\icu4j-66.1.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\mojang\javabridge\1.0.22\javabridge-1.0.22.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.3\jopt-simple-5.0.3.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.1.25.Final\netty-all-4.1.25.Final.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\21.0\guava-21.0.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.5\commons-lang3-3.5.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.5\commons-io-2.5.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.10\commons-codec-1.10.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\mojang\brigadier\1.0.17\brigadier-1.0.17.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\mojang\datafixerupper\4.0.26\datafixerupper-4.0.26.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.0\gson-2.8.0.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\it\unimi\dsi\fastutil\8.2.1\fastutil-8.2.1.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.8.1\log4j-api-2.8.1.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.8.1\log4j-core-2.8.1.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\3.2.2\lwjgl-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl-jemalloc\3.2.2\lwjgl-jemalloc-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl-openal\3.2.2\lwjgl-openal-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl-opengl\3.2.2\lwjgl-opengl-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl-glfw\3.2.2\lwjgl-glfw-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl-stb\3.2.2\lwjgl-stb-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl-tinyfd\3.2.2\lwjgl-tinyfd-3.2.2.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\mojang\text2speech\1.11.3\text2speech-1.11.3.jar;C:\Users\river\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\2.2.30\authlib-2.2.30.jar;C:\Users\river\AppData\Roaming\.minecraft\versions\1.16.5\1.16.5.jar -Dlog4j.configurationFile=C:\Users\river\AppData\Roaming\.minecraft\assets\log_configs\client-1.12.xml -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M net.minecraft.client.main.Main --username fc4091db --version 1.16.5 --gameDir C:\Users\river\AppData\Roaming\.minecraft --assetsDir C:\Users\river\AppData\Roaming\.minecraft\assets --assetIndex 1.16 --uuid fc4091db2f795c7899fa8436d73a9406 --accessToken  --userType  --versionType release
Error: Could not find or load main class net.minecraft.client.main.Main

[mindstorm38]

Is the following file existings: C:\Users\river\AppData\Roaming\.minecraft\versions\1.16.5\1.16.5.jar
If so, can you show us its content (open as a ZIP)?

[RiverRyan3000]

it exists but when i opened it as a zip it was empty, and the size of it was 0kb
but when i removed the whole .minecraft folder and reinstall it with the minecraft luncher, than using the version file for portablemc it worked, but it still passes the same error when using --main-dir

[mindstorm38]

but it still passes the same error when using --main-dir

I think the patch I worked on today should fix this, I'll tell you when I release it so you can try