compareSpectra limits using joinPeaksGnps

[LiesaSalzer]

Hi, I was testing the GNPS functionality from MsCoreUtils with compareSpectra. However, when I have a lot of MS2 spectra to compare (1603 MS2), it seems that computational limits are reached (plus computations take super long) and I get following Error message:

> GNPS_score <- compareSpectra(ms2_spectra_comb,
+                              MAPFUN = joinPeaksGnps,
+                              FUN = gnps,
+                              tolerance = tolerance,
+                              ppm = ppm, 
+                              type = "inner")
Error in solve_LSAP(score_mat, maximum = TRUE) : 
  long vectors (argument 1) are not supported in .C

I have no idea, if this can be solved somehow, but I just wanted to let you now.