The Intel® RealSense™ SDK has been discontinued. No ongoing support or updates will be available.
While experimenting with RealSense and Unity 5 the other day, I discovered that I was getting the following error.
Failed to load 'Assets/Plugins/libpxccpp2c.dll', expected 64 bit architecture (IMAGE_FILE_MACHINE_AMD64),but was IMAGE_FILE_MACHINE_I386.....
What this means is that the libpxccpp2c.dll getting distributed by the RealSense Unity Toolkit is the 32 bit version of the DLL. There is a very simple fix which is to simply copy the 64bit version and replace the 32 bit version of the DLL into Assets/Plugins.
You can find the 64bit version at <install folder>\RSSDK\bin\64bit.