I have just tested with 32bit Lazarus 2.0.11 and FPC 3.2.1 on Win10x64. First I uninstalled all my pl_packages and recompiled IDE. Then downloaded just pl_excontrols.zip from ct4laz repo, extracted it, opened package, compiled and installed. IDE was rebuilt without any problems.
If I open downloaded pl_excontrols.zip I can find all *.res files where they should be.
Could you please check if \pl_components\pl_excontrols\source\TplSmartGridCursors.res file exists and could be accessed?