Question: I have a developer in Nigeria and I am based in the U.S. He has set up sandbox on my website for testing purposes. When he processes a transaction, he gets a successful transaction message. I get a 

```
Error : Order total is missing.
Array
(
[TIMESTAMP] => 2014%2d10%2d27T16%3a18%3a05Z
[CORRELATIONID] => 868f7f8239a35
[ACK] => Failure
[VERSION] => 109%2e0
[BUILD] => 13517841
[L_ERRORCODE0] => 10400
[L_SHORTMESSAGE0] => Transaction%20refused%20because%20of%20an%20invalid%20argument%2e%20See%20additional%20error%20messages%20for%20details%2e
[L_LONGMESSAGE0] => Order%20total%20is%20missing%2e
[L_SEVERITYCODE0] => Error
)

```

We are making the same transaction with the same sandbox paypal account, but he doesnt get any errors and the payment gets processed. I have called paypal 5 times over the last 2 weeks and they have been extremely unhelpful, just asking me to keep checking my e-mail for their response which should be 24-72 hours. Again, its been 2 weeks. 

Any help would be appreciated.

Answer: 
This is a known problem on Ubuntu 14.10 (there's a behavior change in glib). This bug has been fixed and the fix will be available in the next release. You can see this also in resultsets (blank results, even though a table has records).
Sometimes it happens to me also and i just double click another table and when i double click back the table with the problem the columns are displayed.

If after re-installing the packages you have the same problem, try removing the table figure from the diagram and drag it back again from the catalog tree. Not sure if it helps at all...