TEQC error

[Hparker]

Dear All,

I am running TEQC on my targeted bisulfite sequencing data.

I have paired end reads and when I use this code to merge the read pairs:

readpairs <- reads2pairs(reads)

I get the following error:

Error in endoapply(reads, mergefun) : 
  'FUN' did not produce an endomorphism

Please can you advise me on what I should do to overcome this error?

Many thanks
Hannah