I used WECCL 1.0 in a project and found the same problem. Here is a paragraph from my manuscript for your reference:
With a script written to verify the integrity of the files in the corpus, we found 124 of the 3,678 files unusable. These include 1 file with no header, 1 with two non-identical headers, 4 with only one sentence, 17 empty files, and 101 that duplicate other files. This leaves us 3,554 files to work with. The corpus has a total of 1,119,510 words, and the length of the individual essays ranges from 89 to 892 words (mean = 315, standard deviation = 87).
Thanks a lot for your prompt response. My present study is only on narration. Then I have to delete the repeated files first. Just wondering why there is such a case which bring unconvinience in WECCL.
Thanks for your response. I have viewed 2.0, but the narration file is deleted. I don't know why.Did you try WECCL 2.0? I haven't tried it myself yet, but these problems might have been solved there, as the compilers of WECCL 1.0 were aware of them.