the mod won't load properly help please

[malw02]

so basically the technic client loads up my pixelmon+ pack and it seems to be fine but the second i even try to move my mouse over the home screen to click multiplayer  it crashes. sometimes it even crashes immediately after loading. this is what it reads.

[B#725]  [15:26:49] [Client thread/INFO]: Forge Mod Loader has successfully loaded 11 mods
[B#725]  [15:26:49] [Client thread/WARN]: Skipping bad option: lastServer:
[B#725]  [15:26:49] [Client thread/INFO]: Narrator library for x86 successfully loaded
[B#725]  [15:26:49] [Client thread/INFO]: [OptiFine] *** Reloading custom textures ***
[B#725]  An unrecoverable stack overflow has occurred.
[B#725] Process exited with error code -1073740791
[B#725] Starting download of https://cdn.technicpack.net/platform2/pack-icons/616349.png?1642385605, with 3 tries remaining

update it says this occasionally too 

 

[B#725]  [16:37:37] [Client thread/INFO]: [OptiFine] *** Reloading custom textures ***
[B#725]  An unrecoverable stack overflow has occurred.
[B#725]  #
[B#725]  # A fatal error has been detected by the Java Runtime Environment:
[B#725]  #
[B#725]  #  EXCEPTION_STACK_OVERFLOW (0xc00000fd) at pc=0x60be4fa9, pid=38984, tid=17704
[B#725]  #
[B#725]  # JRE version: Java(TM) SE Runtime Environment (8.0_51-b16) (build 1.8.0_51-b16)
[B#725]  # Java VM: Java HotSpot(TM) Client VM (25.51-b03 mixed mode windows-x86 )
[B#725]  # Problematic frame:
[B#725]  # C  [igc32.dll+0xce4fa9]
[B#725] Process exited with error code -1073740791
[B#725] Starting download of https://cdn.technicpack.net/platform2/pack-icons/616349.png?1642385605, with 3 tries remaining