[CWB] corpus filename can't start with digit?

[Jiayue Wang]

Hi

I created a pos tagged corpus, in which the name of each file begins 
with some digits. When I tried installing the corpus, lots of error msg
pop on the screen, and the index folder was secretly DELETED, which 
means all other corpora became invalid. I made the index directory, 
renamed a corpus file so its name begins with a letter, and installed 
that single file as a corpus, this time CQPweb created a subfolder in 
the index folder as expected. But when I went on to go to the metadata 
creation page, there was another error. There's another strange thing: 
when I deleted the corpus, the index folder was gone too, not just the 
subfolder. Did my CQPweb go wrong?

Any help is appreciated!

Jiayue