Thanks to a GitHub issue raised by @HnyBadjr, I was able to fix a bug that didn’t properly parse NTS strings containing the letter “E” (in case you’re wondering, the algorithm to parse the NTS string starts at the beginning and stops parsing the series, which is a number, when the string can’t be converted to a number any longer; since the letter “E” is completely valid in numbers, this approach had to be changed). Also apparent in testing was that anything other than a string vector generated errors, so coercing the input to character input was also added. Find the new version on CRAN!