[BioC] Problem writing large FCS files using write.FCS in flowCore 1.12.0

[Robert Bruggner]

Hi all, 

I'm running flowCore 1.12.0 and am having trouble writing a large FCS file (1.15 million events, 39 channels) using write.FCS(). The error I am getting is:

Error in rep(" ", 8 - nchar(i)) : invalid 'times' argument

For example:

> a = read.FCS(filename="/Users/rbruggner/Desktop/big.fcs")
> dim(exprs(a))
[1] 1143353      39
> write.FCS(a,filename="/tmp/big.fcs")
Error in rep(" ", 8 - nchar(i)) : invalid 'times' argument
> 

If I create a new flowFrame with a subset of the events (say, 100k events), the write works correctly. Does anyone have any suggestions as to what might be causing this error?  Many thanks for any suggestions. 

-Rob

Attached session info:
R version 2.10.1 (2009-12-14) 
x86_64-apple-darwin9.8.0 

locale:
[1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] flowCore_1.12.0    rrcov_1.0-00       pcaPP_1.8          mvtnorm_0.9-9      robustbase_0.5-0-1 Biobase_2.6.1     

loaded via a namespace (and not attached):
[1] feature_1.2.4 graph_1.24.1  ks_1.6.8      MASS_7.3-5    stats4_2.10.1 tools_2.10.1