I have a set of documents based on a LaTeX template. Every document has its own folder, as following:
docs-folder
|-doc #1
|-doc #2
...
|-doc #n
|-texmf
|-tex
|-bibtex
|-fonts
|-docs
|-misc
|-logo.jpg
|-acronyms.tex
I wrote the template on my own, and, for every document (from #1 to #n) it loads the files logo.jpg and acronyms.tex with \includegraphics{logo.jpg} and \input{acronyms.tex}.
The path ..\docs-folder\texmf is set as a project root in MikTeX, and the local texmf tree is recognized properly, excluding the misc folder.
So, the path ..\docs-folder\texmf\misc is set as the value of the TEXINPUTS environment variable (under Windows). This is done in order to avoid an unwanted replication of the two files.
What happens is that, when I compile one of the documents, the file acronyms.tex is not found, while the logo.jpg is correctly found by PDFLaTeX.
I have no wonder why the acronyms.tex file is not loaded.