Lots of undefined references

i think you’ve copied the example in a wrong place, the best way is to copy one of the examples in your download to a different folder and then overwrite the src folder with the new one. The projects need to be at the same level in the folder structure as the original ones like:

openFrameworks/apps/myprojects/fluid

EDIT:
just realized that some libraries were wrong in the last commit i did to github yesterday, so i you continue having problems better download the package again