I tired to access the REACTOME database by the following R code which I always did as following:
library("biomaRt") reactome=useMart("REACTOME") pathway=useDataset("pathway",mart=reactome) I got the error MSG as following:
Error in useDataset("pathway", mart = reactome) : The given dataset: pathway , is not valid. Correct dataset names can be obtained with the listDatasets function.
Then I used listDatasets(reactome) to see all the datasets under REACTOME. I got no datasets under it.
 dataset description version <0 rows> (or 0-length row.names)
Is the REACTOME database down or there is some problem with the connection?
It used to work for me. But I tried last Friday, it didn't work till now.