Hello,
This is a known issue and will be fixed in the next version of the FT9xx Toolchain:
The following folder interferes with the build.
C:\Users\Username\AppData\Local\VirtualStore\Program Files (x86)\Bridgetek\FT9xx Toolchain\Toolchain\hardware\include
When Eclipse is not run in administrator mode, the library source files under system directory 'C:\Program Files (x86)' cannot be modified form eclipse editor. But if you actually try modifying them, the files gets discreetly saved in C:\Users\%Username%\AppData\Local\VirtualStore\Program Files (x86)\Bridgetek\FT9xx Toolchain\. Eclipse sees the files it changed in C:\Program Files (x86)\Bridgetek\FT9xx Toolchain, but other applications like the Explorer will see only the unchanged file.
Possible Workaround for v2.5.0 release:
Delete the C:\Users\%Username%\AppData\Local\VirtualStore\Program Files (x86)\Bridgetek upon installation of toolchain. But this will clear 'VirtualStore' folder only for that user username.
Please run Eclipse as an administrator to overcome any issues.
Also refer to
BRT_TN_002 Modifying FT9xx API Functions when trying to override or modify local API code.
Best Regards,
BRT Community