An applicant seeking to appeal a conviction entered on a guilty plea must adduce evidence capable of establishing a miscarriage of justice. Where the uncontradicted evidence shows the applicant received extensive legal advice, signed detailed written instructions confirming the pleas, abandoned an application to vacate the pleas, and proceeded to sentence without challenging the facts, references to bad health and pressure from legal advice are insufficient to establish a miscarriage of justice. The circumstances in which the plea was entered and maintained, including the absence of any challenge at the sentence hearing, are significant factors.
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