CMake fails if project is stored on an external drive

Hello.

I am using CLion 2017.3.3 with the MinGW 5.0 toolchain, bundled CMake version 3.9.6.

I store my projects on a standard 32GB USB flash drive. Today, when attempting to build my project, I got a "No rule to make target [project name]" error. I discovered that this issue resolved itself if I copied my project folder to my desktop on my C: drive. This is the only fix I have found. I have also tried:

• Moving the project folder to a different path on the flash drive
• Symlinking the flash drive to a folder on my C: drive (so CLion was loading the project from C:\DDrive\projectname)
• Switching to a different machine with the same CLion version, but with the Cygwin64 toolchain.

I even tried creating a new, blank project on the drive with the standard template provided by CLion (single-file hello world program with default CMakeLists.txt file), but CMake would not compile it.

Any advice is appreciated, I work on multiple machines so it is most convenient to store my projects on removable media.