Cannot use train.crop.py

[prayagpawar]

('class_list', 15)
('find image', 7)
('find label', 7)
(0, 'read image', 'P2598.png')
Traceback (most recent call last):
File "train_crop.py", line 243, in
clip_image(img.strip('.png'), img_data, box, 800, 800)
File "train_crop.py", line 199, in clip_image
save_to_xml(xml, subImage.shape[0], subImage.shape[1], box[idx, :], class_list)
File "train_crop.py", line 116, in save_to_xml
f = open(save_path,'w')
IOError: [Errno 2] No such file or directory: 'rootdir/r2cnn/R2CNN_Faster-RCNN_Tensorflow/trail/save/labeltxt/P2598_0000_0256.xml'