It sounds like you may not be copying all the files. Some support file may be placed somewhere else on the hard drive and may not get copied to the flash. Studio probably has a “export project” function. Try exporting it to the flash drive rather than copying. Studio may then copy all necessary files it needs. Including any hidden or system files that may be lost by copying.
I’m not a Studio user but my NLE will transport projects this way. 😉
J
