iCue no longer starting up

Hey guys,

today as I started up my pc I noticed that my K75 RGB has no lighting anymore. Sometimes iCue didn't start up during the boot and I had to start it manually, but after starting it today, the icon appears in the taskbar for a short time. After that it is gone again.

I've checked the log files and saw this:

2020-07-01T04:27:32 I cue.init: iCUE version: 3.30.89
2020-07-01T04:27:32 I cue.init: Updates server: https://www3.corsair.com/software/CUE_V3/
2020-07-01T04:27:32 I cue.init: Build type: Public Release
2020-07-01T04:27:32 I cue.init: Application ID: 5704
2020-07-01T04:27:32 W cue.locale: Cannot find dir for qt *.qm files
2020-07-01T04:27:32 I cue.init.font: Using Regular text font family: "Open Sans"
2020-07-01T04:27:32 I cue.init.font: Using Title text font family: "Gotham Bold"
2020-07-01T04:27:32 I cue.hid_device_detector: Start worker thread.
2020-07-01T04:27:32 W cue.libs.focustimecounter: Previous session ended improperly, number of starts wont increase
2020-07-01T04:27:32 W cue.datacollection.devicelistwatcher: The device list was not saved correctly after the last session.
2020-07-01T04:27:32 W cue.lib.datacollection.engine.sqlite: SQL query failed.
2020-07-01T04:27:32 I cue.devices.enum.hid: Leaving working state. DeviceEnumeratorBase::WorkingStateChangeReason::UserSessionPropertyChanged Session disallowed.
2020-07-01T04:27:32 I cue.devices.enum.router: Leaving working state. DeviceEnumeratorBase::WorkingStateChangeReason::UserSessionPropertyChanged Session disallowed.
2020-07-01T04:27:32 I cue.devices.enum.clink: Leaving working state.
2020-07-01T04:27:32 I cue.plugin: Trying to load library: "I:/iCUE/Corsair/CORSAIR iCUE Software/plugins/ASUS/asus_motherboard_plugin.dll"
2020-07-01T04:27:32 I cue.plugin: Library is loading, will check if it's plugin: "ASUS/asus_motherboard_plugin.dll"
2020-07-01T04:27:32 I cue.plugin: Trying to load library: "I:/iCUE/Corsair/CORSAIR iCUE Software/plugins/Lenovo/CUEPlugin.dll"
2020-07-01T04:27:32 I cue.plugin: Library is loading, will check if it's plugin: "Lenovo/CUEPlugin.dll"
2020-07-01T04:27:32 I cue.plugin: Trying to load library: "I:/iCUE/Corsair/CORSAIR iCUE Software/plugins/OriginPC/CUEOPCPlugin.dll"
2020-07-01T04:27:32 I cue.plugin: Library is loading, will check if it's plugin: "OriginPC/CUEOPCPlugin.dll"
2020-07-01T04:27:32 I cue.devices.enum.phost: Leaving working state.
2020-07-01T04:27:32 W cue.plugin: Processing already finished
2020-07-01T04:27:32 W cue.plugin: Processing already finished
2020-07-01T04:27:32 W cue.plugin: Processing already finished
2020-07-01T04:27:32 W cue.sensors.storage: SensorInfo load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.clink.configuration_manager: Cooling storages load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 I cue.profiles.folders.tree: Profile order deserialization started: "C:\\Users\\XXXX\\AppData\\Roaming\\Corsair\\CUE/profiles/tree.cueprofileorder"
2020-07-01T04:27:32 I cue.profiles.folders.tree: Profile order deserialization finished: "C:\\Users\\XXXX\\AppData\\Roaming\\Corsair\\CUE/profiles/tree.cueprofileorder"
2020-07-01T04:27:32 W cue.clink.ocp.storage: OcpSettings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.clink.device.hw_lightings: Old hardware lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.clink.device.hw_lightings: Hardware lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.dashboard.widget_provider: Widget data storage ( "I:/iCUE/Corsair/CORSAIR iCUE Software/predefined_data/widgetsMetaData" ) load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 I cue.devices.enum.dram: Leaving working state.
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 I cue.ro_helpers: LLAccessIpcClient(0xc6cfbe8) Start connecting to host QUrl("tcp://127.0.0.1:49670")
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Lightings load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Actions load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.library: Actions load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 W cue.dpi.manager: "C:\\Users\\XXXX\\AppData\\Roaming\\Corsair\\CUE/dpi" Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:32 I cue.ro_helpers: LLAccessIpcClient(0xc6cfbe8) Successfully connected to host node at QUrl("tcp://127.0.0.1:49670")
2020-07-01T04:27:32 I cue.session: Locked changed to false
2020-07-01T04:27:32 I cue.session: Local changed to true
2020-07-01T04:27:32 I cue.session.win: Will notify 'connected changed to' with delay
2020-07-01T04:27:32 I cue.actions.macro.win: Init time: 0.401631 (init: 2e-07 reset: 0.0014948 )
2020-07-01T04:27:33 I cue.llaccess: Controller 0 : Bus capabilities: 3 Max block size: 0
2020-07-01T04:27:33 I cue.llaccess: Controller 1 : Bus capabilities: 3 Max block size: 0
2020-07-01T04:27:33 I cue.llaccess: Controller 2 : Bus capabilities: 7 Max block size: 32
2020-07-01T04:27:33 I cue.llaccess: Northbridge: Intel Haswell E
2020-07-01T04:27:33 I cue.llaccess: Southbridge: X99
2020-07-01T04:27:33 I cue.llaccess: Slot count: 8
2020-07-01T04:27:33 I cue.hw_profile.manager: Start worker thread.
2020-07-01T04:27:33 C cue.button_content_storage: "Loading of devices properties failed!" Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:33 C cue.button_content_storage: "Loading of library property failed!" Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:33 C cue.buttons_lib: "Loading of buttons library failed!" Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:33 W cue.touchscreens.crossdevice: Touchscreen removed cross-device screen ids load failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:33 W cue.screens.data_provider: Widget data storage failed: Could not detect cereal root node - likely due to empty or invalid input
2020-07-01T04:27:33 I cue.core.init_ui: Starting UI.
2020-07-01T04:27:33 W QObject::connect(MobileServerSettingsModel, ProgramSettingsModel): invalid nullptr parameter
2020-07-01T04:27:33 C cue.sys_info.win: Failed to acquire service: 80070422.

Does anyone know how to repair this?

I've reinstalled iCue completely, I've uninstalled it, deleted the registry keys like stated in the corsair guide on how to uninstall it completly and reinstalled it. But no luck so far.