OpenCV Error: Null pointer (Invalid pointer to file storage) in cvWriteInt

[lingdd]

Hi, There are some errors when I run the vs2010 demo!
OpenCV Error: Null pointer (Invalid pointer to file storage) in cvWriteInt, file
........\opencv\modules\core\src\persistence.cpp, line 2964

[andrewssobral]

This error occurs when config folder does not exists. Thank you for reporting this issue.

[murari023]

Then how to solve this problem? In VS 2013 also i am facing the same issue. The solution is building but the setup is not running

[andrewssobral]

Hi @murari023 you need to create a config folder in your project path, bgslibrary use it to store the configuration files...

[Mikkke46]

Hello, i have the same problem. But the config exist folder.

[JLiss13]

I had a very similar issue (I had an existing config folder) and it was solved when I deleted the XML I saved my calibration output information to and re-ran the program.

[anibalanto]

Hello! Solve the problem create manually the folder config inside the folder build.