I'm trying to set up STM32Duino on a Win64 machine, running the V1 IDE, to program an STM32 board, but I keep getting an error that the programmer can't find busybox? I checked in the STM32Tools directory and there seems to be a copy of busybox in there... Any ideas as to what's causing the error?
This error is also being caused on Linux somehow (even though Busybox is a core system component there!) but I'd like to investigate Win64 first

Full text of error below:
{busybox} sh C:\Users\BitCorrupted\AppData\Local\Arduino15\packages\STMicroelectronics\tools\STM32Tools\2.2.3/stm32CubeProg.sh -i swd -f C:\Users\BitCorrupted\AppData\Local\Temp\arduino_build_479044/stmSPItest2.ino.bin -o 0x0 java.io.IOException: Cannot run program "{busybox}": CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at processing.app.helpers.ProcessUtils.exec(ProcessUtils.java:26) at cc.arduino.packages.Uploader.executeUploadCommand(Uploader.java:129) at cc.arduino.packages.uploaders.SerialUploader.runCommand(SerialUploader.java:383) at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:197) at cc.arduino.UploaderUtils.upload(UploaderUtils.java:77) at processing.app.SketchController.upload(SketchController.java:732) at processing.app.SketchController.exportApplet(SketchController.java:703) at processing.app.Editor$UploadHandler.run(Editor.java:2061) at java.lang.Thread.run(Thread.java:748) Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessImpl.create(Native Method) at java.lang.ProcessImpl.<init>(ProcessImpl.java:386) at java.lang.ProcessImpl.start(ProcessImpl.java:137) at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) ... 9 more An error occurred while uploading the sketch