NullPointerException when calling "Issue.getAttachments()" from "Create Issue" transition

Hi,

Invoking method "com.atlassian.jira.issue.AbstractIssue.getAttachments()" from transition a validator in "Create Issue" transition throws a "java.lang.NullPointerException".

Note that the problem appears from a validator, i.e., before execution of post-function "Creates de Issue Originally".

I consider this is a bug, since the correct behavior should be to return attachments provided in Create Issue screen, or an empty collection. The exception is uncatched by JIRA and is shown in UI.

The stack trace looks like this:

2015-12-10 09:05:06,870 http-nio-8080-exec-8 ERROR admin 545x199x1 1u7yt9q 0:0:0:0:0:0:0:1 /secure/CreateIssueDetails.jspa [c.f.j.p.workflowToolbox.shared.Parser] *** NullPointerException: null
java.lang.NullPointerException
at com.atlassian.jira.issue.managers.DefaultAttachmentManager.getStoredAttachments(DefaultAttachmentManager.java:191)
at com.atlassian.jira.issue.managers.DefaultAttachmentManager.getAttachments(DefaultAttachmentManager.java:185)
at com.atlassian.jira.issue.AbstractIssue.getAttachments(AbstractIssue.java:71)
at com.fca.jira.plugins.workflowToolbox.shared.AttachmentsHelper.getConsolidatedGeneralizedAttachments(AttachmentsHelper.java:74)
at com.fca.jira.plugins.workflowToolbox.shared.AttachmentsHelper.getAllAttachments(AttachmentsHelper.java:34)
at com.fca.jira.plugins.workflowToolbox.shared.GeneralizedField.getValue(GeneralizedField.java:2651)
.....

The last calls are from JIRA Workflow Toolbox plugin, which I develop.

Thanks,

Fidel