Syncfusion\Essential Suite\Help\Class Reference
If the 5 files are there, here is a little utility to register the help again. Unzip these two files and copy them to where the help files were installed. Within the batch file, there are two ocurrences of a path that should be set for our full product install. Another thing to check is to make sure Visual Studio is not running when you do this.
13.12.2003 12:18 885 COL_syncfusion.ug.grid.HxC 19.12.2003 05:50 202 COL_syncfusion.ug.grid.HxT 15.12.2003 19:39 897 COL_syncfusion.ug.grouping.HxC 19.12.2003 05:49 210 COL_syncfusion.ug.grouping.HxT 26.11.2003 15:03 167 COL_syncfusion.ug_F.HxK 26.11.2003 15:03 167 COL_syncfusion.ug_K.HxK 10.06.2002 06:02 57 344 InnovaHxReg.exe 16.03.2004 10:12 4 721 RegNameSpace.bat 03.08.2004 20:26 6 567 087 syncfusion.ug.grid.HxS 03.08.2004 20:26 529 865 syncfusion.ug.grouping.HxS 14.12.2003 07:13 555 Syncfusion.UG.HxC 19.12.2003 05:49 207 Syncfusion.UG.HxT