Possible Slim related blog error

[JacksonOfTrades]

Hello, I recently converted from using simple ERB to style my middleman sites and I now use Slim instead. It was working good for a while, but now I cannot build a certain blog. While when I middleman build I get no error, when I run middleman server I eventually get the error Slim::Engine: Option :Lang is invalid

As I have designed my blog strangely, I manually define each page to have its own layout, even though it is exactly the same one.

In my Config.rb file, I have require 'slim as the only slim related thing there.

Please help, you're my only hope!

[tdreyno]

Can you describe the actual error? The slim warning is just a warning and shouldn't be influencing anything. Are blog articles missing? Is there a Ruby stack trace?

[JacksonOfTrades]

In between writing the original post and now, I managed to fix the error. By adding :git => 'https://github.com/slim-template/slim' to the gemfile after require 'slim', adding
set :slim, :layout_engine => :slim
Slim::Engine.set_options :pretty => true to config.rb and changing the default file extension to .slim I managed to fix it.

However, now I'm getting a completely different error. My posts do not build correctly, and don't give any error, instead give off only code See example. If I change the file extension of a post to .html.md then again I get a build error again. In the build directory, what I see are the files, but without an extension (I.E 2015-05-15-grape-surgery instead of 2015-05-15-grape-surgery.html) leading them to be unable to be read,

In the original case, the only error message thrown was an error next to the file when using middleman build.

[tdreyno]

I'm going to need a copy of your app to diagnose

[JacksonOfTrades]

Here you go, a good old testing copy. Good luck!

[JacksonOfTrades]

Sorry, it seems like I linked nothing with my comment. I fixed it.