Error Saving Uploaded Files (.c and .h) in Extension Builder


Hello all,
I need to upload several files (.h and .c) for a display control.
I can Upload the files using the extension builder (Transcode Settings->Add Source File) but it fails when I “Save” returning “Save Failed”
It only Fail when I Upload around 50 files. If I Upload 10 files it works fine.

I will appreciate your help