Hi there,
I’m not able to recreate this issue with a fresh WordPress install and installing the plugin through the plugin repository. Is there any additional information from the error message you’re getting?
Could you also let me know what version of WordPress you’re running and possibly what version of PHP?
Not sure what was happening with version 2.0.8. For some reason it was adding a trunk/ directory into when installing the plugin. I uploaded 2.0.9 and it seems to have resolved that. Not sure where it came from as I didn’t include any trunk directory in the plugin. Seemed like a bug with the ww.wp.xz.cn installer. I’ll dig into it some more. But let me know if 2.0.9 is working better for you.