I'm trying to export some curves to solaris and I'm running into this error. The usd that I export works in usdview but it doesnt work when I try to bring it into solaris, please see below images
I had the same issue while trying to reference the .usd file in solaris. The issue was the spaces in the full file path. I had to rename the folders from "D:\1My documents\..." to "D:\1My_documents\..." and so on for every folder in a path and the error disappeared.
I ran into the same issue and was able to solve it by just putting the File Pattern in quotation marks in a reference lop: "G:/My Drive/work/2023/solaris_test/geo/manyshapes.usd"