Due to a major release change in SPOT, the newest package version SPOT 2.0 on CRAN is currently not compatible with TDMR 1.5 (and TDMR 1.4). Therefore TDMR is currently archived on CRAN. We are working on an update. For the time being:
You can download TDMR 1.5 (and 1.4) together with the last compatible SPOT 1.1.0 from this web site. Please follow the installation instructions here on our download page.