input file example in galaxy:WASH7P 0.305384KLHL17 6.4404GLTPD1 22.8633PUSL1 22.9327CPSF3L 0.446421SAMD11 0.0267019 output:AAAS then the error message complaint is on the tile column.After updating R to latest version the "grouping" function is no longer working. I have been searching very hard on the internet regarding to this issue. However, I have no luck to get any solution. This issue tracker is my last option by far. I have no idea what happened. thank