can't make flightgear work form git

[lomar]

well, i installed the latest fgdata from git, but when i try to launch i get the following message:

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Version check failed: please check your installation
Found data files for version '2016.1.0 at C:/program Files/flighgear/data, version 3.4.1 is required

what can i do to solve this?

[Hooray]

update simgear, flightgear and fgdata - rebuild everything in order

[lomar]

and what do i need to do to rebuild this?
sorry, but i have never installed FG this way, so i need some help

[Hooray]

Then you have quite a bit of reading to do (see the wiki for details).

Unfortunately, there isn't much more that I can tell you, because you didn't tell us how you obtained/installed/built FlightGear - i.e. how to proceed from here depends entirely on your way of installing FlightGear.

But basically you are trying to use a base package in conjunction with binaries that are meanwhile outdated.

Currently, that is not even critical, i.e. easy to work around by editing the version file to revert those changes - but you will almost certainly want to update sg/fg instead of doing that.

[elgaton]

The best option would be downloading the new nightly build from download.flightgear.org (assuming you install FG from there).

An explanation of what happened: FG changed version number; specifically, we went from 3.7 to 2016.1.0. The version number is hardcoded in FlightGear as well as in FGData. Whenever the simulator is run, it checks whether those numbers match, so that you won't experience problems caused by incompatibilities between old FG versions/new FGData or vice versa.
In your case, you probably had an older nightly build installed/built (which had version 3.7 hardcoded in). By pulling yesterday's FGData, you pulled in the change in version number as well, so that FG will now - legitimately - refuse to start due to the mismatch. The latest nightly FG build on the build server should fix the problem.

As an alternative, if you have Visual Studio installed, you can do what Hooray suggested (rebuild FlightGear from source).

[FlugHund]

On a quick glance it seems you've compiled SG/FG 3.4.1 but did not switch to fgdata's 3.4.x branch:

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git checkout origin/release/3.4.0

[legoboyvdlp]

It looks like he actually has 3.4.1 FlightGear, but 2016.1.0 FGDATA.


Not going to work...

[Alant]

The version numbers have only just been updated. It seems that the OP did his last git update during the version number change. All that is needed is a fresh git pull of simgear, flightgear and fgdata, followed by cmake and compile and install of simgear , then cmake and compile and install flightgear to get everything back in sync.

All is in order here.

[lomar]

well, i downloaded the latest binaries and it worked. thanks everyone for the help !!!!!