I'm running version 1.15 or what ever the current one is.
Actual version is 1.12...
About mod, some huge one are always at the 1.05 ... 1.10, 1.11 and 1.12 have come in December... time is needed for convert the huge mod...
Some mod work with 1.12 but the upgrade was made a few days or weeks ago... be sure to have the right version of the mod, the last update...
By example, i am partner of the 7DS mod... the final release, the 2.0 comming out soon is for the sins 1.05 ... next version, the 2.5 future relase will be for the sins 1.12... Why we don't upgrade directly ? The 2.0 have ask almost 1/2 work for a very big team... delay the release for a update when we are almost ready will be a fool choice... upgrade will take one or more month, but it will come... usually, with new content...
A other problem... usually, mod tools are released some week or month after... by example, the actual mod tools are 1.00... but the actual version is 1.12 !!! Without actual mod tools, we have not the reference file !!! Of course, we can make our own reference file but again, it ask time...
For us, modder, the good customer service of Stardock is really a plague... once enough customer ask something, they make it... these obligate us to update our mod... in some case, a newupdate appear before the devs of the mod have time to upgrade it...