Error with VS2008 (solved)

[Gustavo Massaccesi]

I´m changing my computer and I got a weird error. I solved this error,
but I'm posting this in case someone gets the same error in the
future.

I copied all the folder with the Racket repository from one computer
to the other instead of using git clone. [Is this a good idea?] [The
same error may happen if you copy or rename the folder.]

When I tried to compile Racket with nmake I got this error:

---
Build started 31/08/2016 11:20:52 p.m..
Project "C:\Users\NewUser\Desktop\Racket\plt\racket\src\worksp\gracket\gracket9.sln"
on node 0 (default targets).
Building solution configuration "Release|win32".
VCBUILD : error : project file
'C:\Users\OldUser\Desktop\Racket\plt\racket\src\worksp\gracket\..\libffi\libffi.vcproj'
was not found or not a valid project file.
---

It was weird, because the C compiler aparently was correctly
installed, and the file was in the correct path and the Racket
repository worked right in the old computer ...

After reading: http://stackoverflow.com/questions/17049482/msbuild-cant-find-vcproj-files-specified-in-solution-after-i-move-the-whole-sou
I looked at the folder and deleted the hidden files [in particular
gracket9.sln.cache] and the project compiled correctly.

[If you look more carefuly, the error references in one part the
OldUser and in other part the NewUser, but I didn't read it carefullly
enough.]

Gustavo