I ran into the same problem.
Have you looked at the 'useCachedValues' parameter for the readWorksheet function? Here is the help document for the parameter:
useCachedValues ββis a logical indication of whether to read a cached formula from a workbook instead of re-evaluating it. This is especially useful when reading data received by Excel with features not supported in XLConnect, such as links to external tutorials. The default is FALSE, which means that the formulas will be evaluated by XLConnect.
I have specified useCachedValues ββ= TRUE. Although the formulas in my case did not include links to external links, this worked for me and I was able to read the values.
Jim t source share