Attempt to execute SCRIPT vl_nnconv as a function

[salehe-e]

I get the following error when trying to run vl_simplenn

Attempt to execute SCRIPT vl_nnconv as a function:
/root/Documents/MATLAB/Add-Ons/Collections/vlfeat_matconvnet/code/vlfeat-matconvnet-6221423/matlab/vl_nnconv.m

[albanie]

This error can occur if:

1. matconvnet has not been compiled
2. matconvnet has been compiled, but the mex build files are not on the path
3. matconvnet has been compiled, the mex build files are on the path, but the matlab file vl_nnconv.m is higher up the path (in terms of priority) than the corresponding mex file, in which case the .m file is found first and the error you mention appears.

Hopefully your issue can be fixed by addressing one of these :)

[waelwmd]

I got the same error, but I found that the matconvnet director was not compiled with Matlab.
I compiled them and it is working now.
these few steps: (it work with Matlab 2017a)

cd( fullfile( 'D:\DeepLearning', 'matconvnet-1.0-beta25' )) % the containing folder of your code
mex -setup
mex -setup C++
addpath matlab
vl_setupnn
run matlab/vl_compilenn ;

[imauGuoyubo]

get the following error when trying to run FCN_test.m
eeror use vl_imreadjpeg
FILENAMES contains an entry that is not a string.