Hi @martijnschouten ! Did you try to do a cmake configure and build from scratch by deleting cmake cache?

I am not sure that I understand what you are asking. My logbook of that day says I did the following (which is pretty much what is in the noob guide in the installation instructions).

mkdir build

cd build

cmake .. -G "Visual Studio 16 2019" -DDESTDIR="c:\PrusaSlicer\PrusaSlicer-master"

msbuild /m ALL_BUILD.vcxproj

cd c:\PrusaSlicer\PrusaSlicer-master\

mkdir build

cd build

cmake .. -G "Visual Studio 16 2019" -DCMAKE_PREFIX_PATH="c:\PrusaSlicer\PrusaSlicer-master\usr\local"

install visual c++ for developers by running the visual studio installer again (was configured for c#)

Open->Project/Solution or File->Open->Project/Solution

click on c:\PrusaSlicer\PrusaSlicer-master\build\PrusaSlicer.sln

copy libgmp-10.dll and libmpfr-4.dll from a standard build zip

build by clicking on the debug button in visual studio

Do you have SLIC3R_STATIC=1 in your environment? If not, set it or call cmake configure step for the project build (not the dependencies build) with an additional -DSLIC3R_STATIC=ON parameter.

I have the identical issue and have also tried with -DSLIC3R_STATIC=ON but this did not make a difference for me (if the static option is required shouldn't it be on by default or in the build instructions).

I seem to have the same issue. The program fails to start with "PrusaSlicer.dll was not loaded" after building it.

Same issue here - followed each step - also tried the static option.

Can anyone here give some advise ?

I managed it to get it running without copying the dll.

I followed the noob instructions.

after loading the SLN-file into visual studio 19 i changed the "version" from Debug to Release and used Build > Build solution and let this run.

Then i went to the folder "D:\PrusaSlicer\PrusaSlicer-master\build\src\Release" (drive letter and folders might be different) ... and there are many files including the dll´s and the prusaslicer.exe which i started and used.

Hope this works for you as well.

To get me startet on different machines, I wrote this small batch (basically the "noob instructions") file (assumed you're using VS2019 x64):

Make sure you start this batch in Developer PowerShell for VS 2019!

@echo off

ECHO I'm going to CLONE the PrusaSlicer repository - ready?
ECHO Best, if you're curently in c:\dev (or similar short path)
ECHO Also make sure you got at least 15 GB of free disk space available
ECHO.
ECHO Press CTRL+BREAK if you want to cancel.
PAUSE
ECHO Are you sure??? Shall I continue?
PAUSE

git clone https://github.com/prusa3d/PrusaSlicer.git --recursive

cd PrusaSlicer

SET "thisPATH=%CD%"
echo Building in %thisPATH%


cd deps
mkdir build
cd build

cmake .. -G "Visual Studio 16 2019" -DDESTDIR="%thisPATH%"

REM This will take a loooong time! Go get some coffee...
msbuild /m ALL_BUILD.vcxproj


cd "%thisPATH%"
mkdir build
cd build
cmake .. -G "Visual Studio 16 2019" -DCMAKE_PREFIX_PATH="%thisPATH%\usr\local" -Wno-dev -Wno-error=deprecated

msbuild -ds -nologo PrusaSlicer.sln -t:rebuild -m -p:Configuration=Release -verbosity:normal

Now you could add this as well:
robocopy "c:\dev\PrusaSlicer\build\src\Release" "c:\PrusaSlicer_Alpha" /MIR /xf *.exp *.lib *.pdb /R:600 /W:30

Use at your onw risk ;-)

I created a PR that should address this issue (added Build->Rebuild Solution among many other things).

Merged, closing. Thanks for your contribution.