Hi,

I was trying to convert the NIST consensus human hcd library 
<https://chemdata.nist.gov/dokuwiki/doku.php?id=peptidew:lib:humanhcd20160503> 
(.msp format) to splib format with spectrast built from TPP 5.2.

After running the command:
spectrast -cNhuman_hcd human_hcd_tryp_best.msp

The resulting human_hcd.sptxt file contains significantly less spectra 
(273,137) than the original human_hcd_tryp_best.msp file (398,373). It 
seems that all peptides with modifications are discarded.

For example, in human_hcd_tryp_best.msp file, there is an 
entry: AAAAAAVGPGAGGAGSAVPGGAGPCATVSVFPGAR/3_2(0,A,Acetyl)(24,C,CAM)

But there is not such peptide in the output human_hcd.sptxt file. Did I 
miss some command-line arguments when converting the library?

Thank you.

Ray

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