I've spend the day looking for an answer to this, and I can't find it. I hope one of you can help me out.

I updated MikTex 2.9 and several packages today (using the update wizard) and I can no longer compile my thesis. After using this wonderful website to solve several problems, I'm left with, I hope, one more:

Trying to compile (pdfLaTeX+MakeIndex+BibTeX), I get this error: 

> 
> Sorry, but "MiKTeX Compiler Driver" did not succeed.
> 
> 
> 

The log file it recommends looking at says just the following:

> 
> 2017-06-01 16:59:16,602-0400 INFO texify - starting with command line: 
>  2017-06-01 16:59:16,608-0400 INFO texify - running 'initexmf --enable-installer --quiet --update-fndb' to refresh the file name database
> 
> 
> 

I've tried compiling from command line, as suggested in other threads for similar-sounding problems, but that didn't change anything. 

I notice that I can compile some other documents, but not all documents. So far, I've only noticed strange behaviour with documents involving .jpg images (not .png or .eps). However, I have a beamer presentation including 1 .jpg image which does compile, so the images apparently are not causing the problem. However, whether I compile from command line or through TeXworks, .jpg images do not show up in the TeXworks viewer (they do show up in Adobe). So I don't know if this is related or not.

I'm not even sure what other information would be helpful. Please let me know if you have any ideas or think some other info would help.

Thanks!