Webread and Quandl issues

Hi,

I've been using the code below to retrieve datatables from Quandl service. Most of the times this code works but lately it works intermittently. When it does not work it gives me the following error:

Error using readContentFromWebService (line 62)

The error "Error copying data." occurred while communicating with URL 'https://www.quandl.com/api/v3/datatables/SHARADAR/SF1.csv?ticker=AAPL&api_key=EWXQoLK6Q3DdzE4DdBfy'.

Error in webread (line 125)

[varargout{1:nargout}] = readContentFromWebService(connection, options);

Error in testQuandl3 (line 15)

qTbl=webread(strcat(str1,'AAPL',str2));

str1='https://www.quandl.com/api/v3/datatables/SHARADAR/SF1.csv?ticker=';
str2='&api_key=XXXXXXXXXXXX';        
qTbl=webread(strcat(str1,'AAPL',str2));