Genymotion "Unable to load VirtualBox engine" on Fedora 23

Issue

After installing genymotion it turned out that genymotion needed some 64bit libraries which where not present in fedora 23.

Installed them, now this error shows up about VirtualBox while trying to run genymotion:

Unable to load VirtualBox engine.Make sure that it is properly installed before starting Genymotion.

I am certain that no errors occurred while installing VirtualBox. Anyways, here's the log from genymotion.

Apr 7 18:32:00 [Genymotion] [Warning] ****  STARTING GENYMOTION  ****   
Apr 7 18:32:00 [Genymotion] [Warning] Genymotion Version: Genymotion 2.6.0   
Apr 7 18:32:04 [Genymotion] [Error] Network error while retrieving JSON content:  0  
Apr 7 18:32:04 [Genymotion] [Error] [getGenymotionLastVersion] Bad request: "/launchpad/last_version/linux/x64/"   
Apr 7 18:32:04 [Genymotion] [Error] Unable to get last Genymotion version number from server:  0   
Apr 7 18:32:05 [Genymotion] [Warning] QIODevice::read: device not open   
Apr 7 18:32:06 [Genymotion] [Error] [createHostOnlyInterface] Creating new host-only interface   
Apr 7 18:32:06 [Genymotion] [Error] VBoxManage ("hostonlyif", "create") returns 1   
Apr 7 18:32:06 [Genymotion] [Error] Output command: "0%...
Progress state: NS_ERROR_FAILURE    
VBoxManage: error: Failed to create the host-only adapter   
VBoxManage: error: VBoxNetAdpCtl: Error while adding new interface: failed to open /dev/vboxnetctl: No such file or directory   
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component HostNetworkInterfaceWrap, interface IHostNetworkInterface   
VBoxManage: error: Context: "RTEXITCODE handleCreate(HandlerArg*)" at line 71 of file VBoxManageHostonly.cpp"    
Apr 7 18:32:06 [Genymotion] [Error] [createHostOnlyInterface] Failed to create interface   
Apr 7 18:32:06 [Genymotion] [Error] "Fail to load vboxmanage plugin from /opt/genymobile/genymotion/plugins/"   
Apr 7 18:32:06 [Genymotion] [Error] VM Engine failed to load   
Apr 7 18:32:06 [Genymotion] [Error] Unable to find VM Engine. Plugin loading aborted.    
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "/opt/genymobile/genymotion/tools/glewinfo" with args ()    
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "lsmod" with args ()    
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "lspci" with args ()   
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "ip" with args ("rule")    
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "ip" with args ("route")   
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "free" with args ()   
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "ps" with args ("afx")   
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "df" with args ("-kh")   
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "dmesg" with args ()   
Apr 7 18:32:06 [Genymotion] [Warning] [LogCollector] Running "cat" with args ("/proc/cpuinfo")   
Apr 7 18:32:21 [Genymotion] [Error] **** STOPPING GENYMOTION WITH ERROR ****   
Apr 7 18:32:21 [Genymotion] [Warning] ****  STOPPING GENYMOTION  ****   
Apr 7 18:32:21 [Genymotion] [Error] [Stats] Can't open database:  QSqlError("", "Driver not loaded", "Driver not loaded")      
Apr 7 18:32:21 [Genymotion] [Warning] QSqlQuery::exec: database not open     
Apr 7 18:32:21 [Genymotion] [Warning] [Stats] SQLite error: QSqlError("", "Driver not loaded", "Driver not loaded")

I'm new to Linux and VirtualBox.

Solution

Okay! Found out what the problem was. Writing this answer so that it might help someone else with a similar problem.

The problem was with virtualbox, when genymotion would run it, virtualbox needed to point to the kernal. It turns out I had installed the required packages but weren't the same version as my kernel. So, all i had to do was update the packages.

The packges in step 2 are required by virtualbox, better update the system before installing them; ensuring the system automatically downloads the appropriate versions of those packages.

1) Update kernel/system,

dnf update

2) Install the following packages,

dnf install dkms gcc kernel-headers kernel-devel

reference: https://www.virtualbox.org/manual/ch02.html#install-linux-host

Answered By - Darshan Miskin