ImportError: DLL load failed while importing _ext: The specified procedure could not be found.

Hi there, I recently installed mmcv-full 1.4.1 and mmdet 2.19.1 using conda and openmim on my windows 10 device, and encountered an import error when running the following line: from mmdet.apis import init_detector, inference_detector, show_result_pyplot The error messages I got were:

I double checked the versions of my cudatoolkit, torch, mmcv-full and mmdet, and everything seems fine to me. I have pytorch==1.10.0, cudatoolkit==11.3.1, mmcv-full==1.4.1 and mmdet==2.19.1.

I tried to reinstall mmcv-full to check I got the build version correctly, here’s the result:

Yet the same error messages were printed. I suspect it is still an compatibility issue between mmcv-full and mmdet, but i think I got the installation steps correct. Would you please help me with this issue? Thank you.

The following are all the packages I have installed in my venv:

[zhouzaida]

Hi @gitgitgithut , we have updated the pre-built packages of 1.4.1. Please have a try.

[duduzai2019]

嗨，@duduzai2019，正如官方mmcv文档所述，您可以使用pip安装特定版本的mmcv-full。pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html

Thank you for your answer, It has been replaced by mvcc 1.4.2 , but train.py is still an old proble