Training on ETH,KITTI,INRIA

[Falmi]

I am using data sets that are converted to Caltech annotation format (which is downloaded directly from caltech website). Before start training I have seat the following parameter in
proposal_config_caltech.m
ip.addParamValue('scales', 720, @ismatrix);
to 600 for INRIA, 810 for ETH, and 500 for KITTI). But I got this error when I train RPN.

FYI, I always remove the cache folder before start training and the script can generate successfully the cache .mat files!
@zhangliliang looking forward to your response