Critical Error after blue-screen / system crash - Thesis

Question

My PC crashed and somehow the thesis.tex file is not compilable anymore! Actually directly after the blue-screen it was it was blank. Because it was stored on a DropBox folder I changed the file with an older (20m or so) one. But Texmaker cannot compile it anymore.

I get critical errors, but the chapter and other files seem to be OK. Any clue?

Log-file chunk:

("C:\Users\...\Thesis.out"
! Text line contains an invalid character.
l.1  
                                                                            ...
A funny symbol that I can't read has just been input.
Continue, and I'll forget that it ever happened.

! Text line contains an invalid character.
l.1   
                                                                            ...
A funny symbol that I can't read has just been input.
Continue, and I'll forget that it ever happened.

[... 100+ times]                                          
                                                                            ...
A funny symbol that I can't read has just been input.
Continue, and I'll forget that it ever happened.

! Text line contains an invalid character.
l.1 ...                                           
                                                                            ...
(That makes 100 errors; please try again.) 
Here is how much of TeX's memory you used:
 8159 strings out of 493921
 121925 string characters out of 3144870
 216984 words of memory out of 3000000
 11389 multiletter control sequences out of 15000+200000
 3938 words of font info for 15 fonts, out of 3000000 for 9000
 841 hyphenation exceptions out of 8191
 38i,0n,38p,3787b,38s stack positions out of 5000i,500n,10000p,200000b,50000s

!  ==> Fatal error occurred, no output PDF file produced!

Answer 1

So. Joseph Wright had a good idea. Everytime something like this happens, you should first try to delete the auxiliary files .aux, .out, .toc, etc. (EXCEPT the Bibliography.bib or other files/folders made by you .tex-files).

If this dosen't work, you can try to take the original template and integrate the files and/or copy-paste the content inside. For me it worked. :) (make sure you read also the comment of the Question)