Dear Gretl community,<br><br>When I try to open a excel file (.xls) the following error message appears:<br><br>&quot;First char of varname (0x0) is bad<br>(first must be alphabetical)<br>Please rename this variable and try again&quot;<br>


<br>My data is quarterly (using the format 1980.1 for the first quarter of 1980)  and my variables name are something like this: bcbXXXX (where XXXX is a number).<br><br>Best,<br>Henrique<br>